Diablo/Magnaflow/ProCold (Includes 1-2 fix 4 diablo) sheet inside

[11H]

Hey all, if you remember that there were three main parts to my "power venture", (Magnaflow 3", ProCold Intake, and Tuning) ... I have decided to continue my project using the predator ... I will say that LS1Edit was on my mind, but after weighing the costs, I decided to leave my tuning in the hands of the Diablo folks...

My goal in a perf program is to make about 15 RWHP over stock tuning with the procold and magnaflow already done... This is a reach I am hearing and know that ... I want a 40-50 RWHP gain from these three mods alone ... This puts the 5.3 avalanche horsepower into the caddy 6.0 HO class ... (If I get 10 RWHP from tuning, my flywheel will be at or about 345-355 HP and 375-380 TQ) *** (This is up from the stock claimed 285HP and 325TQ)

My best dyno without tuning was 248 RWHP and 270 RWTQ at 95 deg F ... on the dynojet 248C ... (stock tune with no learn time) ... I will say my best was only within 2-3 HP/TQ of my worst ...

--------------------------------------------------

Now the tuning ... With drive time settled in on the procold (w/new filter) and the Magnaflow, NGK TR55's, and Taylors, I have gathered some data to send to Diablo ... My Long term fuel trims at 70 mph cruise were +5-6, and at wot, they would lock at about +7-8 ... This is running RFG @ 87 octane ... I also gave them some KR numbers to boot ... Along with what I do with my truck ...

After about a 40 minute phone conversation, I got 2 tunes from Johan both of which "included" the 1-2 shift fix ... (via email) ... The first tune was with some VERY mild timing and fuel adds, along with centering my LT fuel trims to zero at part throttle ... He also did a couple other things that he said would make the truck respond quicker off the line ... I have some more drive-time to log, but the results look nice so far ... So, that's the custom 87 file ...

Results? ... No ses lights to speak of, and the truck does respond better off idle no doubt ... My LTFT's are running MUUUCH nicer at about -1.5 at cruise and about +1.5 at WOT ... Nice ... This alone will allow more power at wot even with the 87 oct ... I took an hour drive, and the truck has better response no doubt and the part throttle/low load/ KR I was getting is now gone ... Another piece of advice that I never really weighed much on from him, was even 87 octane gas needs to be either Mobil, or Amoco ... Chevron, Shell, and arco he said have KR even with stock tunes when they dyno cars ... So, only Mobil for me from now on ...

Now the 91 Octane file ... I have it, but haven't tried it yet ... This will be saved for dyno day when premium comes back down here in AZ ... And for when I want to have fun ...

I will say that Diablosport gives LS1Edit a run for it's money unlike any other handheld does ... The only draw-back is that "someone else" is doing your tune for you rather than you yourself ... But hey, I figure they know what they're doing more than I do ... Heck, it took him a half hour to get me two tunes ...

Diablosport rocks is all I can say ... If you want a re-sellable plug and play no fuss tuner for the "pack" buy a Hypertech or the superchips 2715 ... If you want to tinker with custom tuning specifically for your truck or car based on your fuel and environment, buy the Predator ...

*** If you get nuts with nitrous, cams, heads, a supercharger or whatever, the diablo tuning staff or an authorized diablo tuning dealer can grow with you and your mods ...

(For those that care, here was my rough cost analysis)

1. LS1Edit (single use) and EFILive = est. $900
-- This version of LS1Edit is a single PCM license that marrys to ONE PCM ... EFILive is a kick butt diagnostics tool though that is worth $330 ... This package is all do it yourself ... You break it, you are sol ...

2. Diablo tuner retail $420 ... Bought power adapter and serial cable for $25 ... The predator marries to one PCM and you have a small handheld tuner instead of a laptop and are able to tune through an experienced tuner with the same capabilities as LS1Edit ... If you want TQM and COT removed, they can do it ...

... Tentative features to come in the Diablo are: Data Logging function, multiple tune slots, and real-time interface capability ... (PCM --> Predator Unit --> Laptop) ... Among some other things like display enhancements to include some new graphics ... From what they told me, Ford units are already sporting some of these new features ...

Again folks, if I have anything wrong in that last paragraph, I am just speaking of what I was told to the best of my abilities ... Oh, and their web site is going to change for the better really soon ...

11H

 

[03NHAVY]

Pardon my ignorance, but is the diablo you are using the standard diablo that is so common here on this site?

Did you specifically ask for an 87 oct tune?

How much did the specific tune cost?

What are some of the fuel things you were talking about, like +1.5 or -1.5 and how do i know what i have?

If you want maybe just send me a PM, but these are some things that will help me on my modding way. I was thinking of getting the diablo now from tybrne but didn't want to get into the 91-93 oct fuels right now.

Thanks for the info. I'm really new at this and have never really modded before.

Matt.

 

[Y2K_Silverado]

Hey 11H, nice post. I have a Predator for my Silverado and I've been playing with the spark and trim settings also but not sure what to do. I've been told that at WOT you want the KR and trims to go to 0.00% but you said that at WOT your trims are now at +1.5% which is good. Mine are at -.78% while crusing and go to 0.00% at WOT. From you conversation with the Diablo guys, should I increase (+) the "power enhancement" to get the trims to +1.5% at WOT? Also, I have no KR with the spark at +2%, should I keep increasing the spark until I see some KR then back it off to the last setting where there was no KR? Any help you could give me, I would apreciate.
Jim

 

[jonboyNY]

11H....remember to get to 345-350 HP at the flywheel you need to be in my range 280+ RWHP.

Also, other then the cost issue between the diablo and ls1edit.....there is ABSOLUTELY, I MEAN ABSOLUTELY no comparison to LS1EDIT. It is night and day....and if you tuning with autotap and efilive....diablo has no chance period.

I hate to contradict you for some parts on this thread, but the cost I agree, the diablo wins hand downs....but if you want to really get into the nicks and crannys of tuning any ls1 based automobile, you need LS1EDIT.

I mean if you look at it from a tuners standpoint who owns a dyno....do you think they would rely hooking up a diablo to a dyno?....I seriously doubt it. But maybe hook up the diablo as a tech monitoring situation when driving, for air fuel and so forth I can go for that.

For the home tuner who doesnt want to spend alot of cash....and get good results some what comparable to LS1EDIT...diablo is gold.

I dont care if Johan does the super super dooper tune update LOLOL for anyone, there is only so much that can be accomplished.

Without a dyno and a TRUE diagnostic setup to monitor systems to tune, your not getting the full advantage of a good tune.

My HPP3 gave me 14 RWHP before I did the whole SLP setup.

That is what you should see from Diablo maybe +-2-5 HP.

Either way, good luck friend.

PS: If you hook up autotap with diablo...you should do extremely good for tuning. Many guys have done that on LS1TECH.COM and posted good results.

Thanx.

 

[11H]

jonboy,,,

Have we entered a debate ? ... I like debates ...

11H....remember to get to 345-350 HP at the flywheel you need to be in my range 280+ RWHP.

So you're saying that I only have 24-25% driveline loss ? Heck an F-Body automatic has about 20% plus ... Autotrac av's have between 30-35% loss ... If you do the calcs, it comes out right ... Actually, I was a tad conservative ... So if my best was 248 with a 30% loss, that's 322 ... Hoping for 10 RWHP from tuning, that's a very conservative 336 RWHP ... Now if the truck loses the 35% (which happens to be industry accepted here in az on some sappy autotracs) that gets me to 348 assuming the diablo only delivers 10 ... Now the canned tune alone on the diablo scores at least 8-10 with no customizing from diablo ... Besides when I quote HP they are estimates although close, they are estimates and two trucks in 2 states can vary with the same mod 5 or more % ... I don't think my numbers are erroneous by all means ... I thought we addressed variances before boss ? ... Remember when you said that the owner of Prodyno should check his truck out because he was making 335 RWHP with the radix and not 350 ? ...

I hate to contradict you for some parts on this thread, but the cost I agree, the diablo wins hand downs....but if you want to really get into the nicks and crannys of tuning any ls1 based automobile, you need LS1EDIT.

I agree with you jon, but for a measly NA guy like me, it's hard to justify the cost of edit ... The most you'll probably see with edit on a NA av is probably if you're damn good with it 20 RWHP under the limits of emissions and that's pushing it ... So if the Diablo gives me half that, cool .. I paid $200 for my diablo and $700 plus more is not worth 10 HP if that ... ... Now you are right, LS1Edit is hands down more thorough ... But for an application like mine, why spend countless hours learning it and stressing about that 10 HP? ... It's not a matter of buying edit and you got the "chit" now ... Don't believe me? ask Redshift about the headaches that go on with home tuners and edit ... ProDyno uses it on Fbodies with a dyno right there and spends half a day sometimes scrounging for another 15 HP on special applications ... BTW, Why ain't you running it ?

I mean if you look at it from a tuners standpoint who owns a dyno....do you think they would rely hooking up a diablo to a dyno?....I seriously doubt it. But maybe hook up the diablo as a tech monitoring situation when driving, for air fuel and so forth I can go for that.

LOL ... The diablo is about the most feeble live data monitor there is ... And yes, for example ProDyno and I are doing this together with the diablo with the dyno to see where it takes us ... I also read LS1Tech and 10-12 RWHP is about right on a 5.3 truck with dyno tuning and help from Diablo ... So would a dyno shop use one for tuning ? YES... One is ... The thing is, they don't have the truck market to invest in another truck LS1 License ... They specialize in GM cars making 400+ RWHP ... The nicky - nack stuff I do is the least of their business ...

I dont care if Johan does the super super dooper tune update LOLOL for anyone, there is only so much that can be accomplished.

With any tuner or writer ... You're right ... You have answered your own concerns ... And to let you know, if Johan has perfect data (on the road type which is better than a dyno along with dyno testing) he has the same tools at his disposal as a shop running edit ... He's running the same dyno SLP is right outside his office ... So IMO, he will do just as good as the SLP guys who offer a tune based on mods ...

Without a dyno and a TRUE diagnostic setup to monitor systems to tune, your not getting the full advantage of a good tune.

I guess you missed the part where I said I was doing this "venture" with ProDyno ? ... A full fledged tuning shop with what you say is needed ? ... These tunes trust me are not the ones that will make dyno day IMO ... They are a starting point, but I bet Johan is close to where we need ...

My HPP3 gave me 14 RWHP before I did the whole SLP setup.

Hate to be blunt jonboy, but I don't think the HPP3 did it ... The fact that you un-installed it and re-installed it probably reset your LTFT's and your KR learn ... But I doubt the HPP3 is good for 14 RW ... But who am I ...

That is what you should see from Diablo maybe +-2-5 HP

Where did you get that from ? ... SOO, an emissions legal Hypertech can make 14, but an "off-road" Diablo can only make 2-5 ? ... Ahhh ... I get it ... Maybe power is measured differently over there ...

PS: If you hook up autotap with diablo...you should do extremely good for tuning. Many guys have done that on LS1TECH.COM and posted good results.

jonboy,, are you iterating what you have read on LS1Tech and basing this thread on their argument ? ...

I will say that it seems that you are giving me advice ... Which I appreciate truly ... I do jonboy, I also envy the fact that you are spending thousands at SLP on your truck ... I wish I could ... I really feel dwarfed by my measly mods compared to yours LOL ...

I have my measly mods under control friend ... I also don't speak unless it has real basis ... I know what LS1Edit is and how it works I also use EFILive Pro which is an advanced form of Autotap ... (didn't know if you knew that as you mentioned using both together above) ... I also know how hard it is to make power on these trucks... My mods and ideas are not by mistake nor are they per the advice of a couple sources but many over years around these trucks ... I choose my mods with my knowledge and it works for me ... I also think that the diablo is 70% of what Edit can be on an application like mine, providing that data is given to them correctly and enough of it ... So I'll leave the big-boy LS1Edit to you and you big hitters, and not fret over the 30% potential diablo may lack in my normally aspirated truck ...

Oh, yeah, you never answered me when I asked if you would throw me some of them golden SLP floor scraps ... I need all the help I can get ... LOL ... Wait to see what happens on dyno day ... I might surprise you ... I have no problem posting sheets; you know that ...

11H

 

[11H]

Hey 11H, nice post. I have a Predator for my Silverado and I've been playing with the spark and trim settings also but not sure what to do. I've been told that at WOT you want the KR and trims to go to 0.00% but you said that at WOT your trims are now at +1.5% which is good. Mine are at -.78% while crusing and go to 0.00% at WOT. From you conversation with the Diablo guys, should I increase (+) the "power enhancement" to get the trims to +1.5% at WOT? Also, I have no KR with the spark at +2%, should I keep increasing the spark until I see some KR then back it off to the last setting where there was no KR? Any help you could give me, I would apreciate.
Jim

Now I'm pretty new at the terminology, but I'll take a stab at it ...

Mine are at -.78% while crusing and go to 0.00% at WOT.

I would say that's damn good to go ... LTFT's vary on load and timing too ... (Higher load =enrichment as does more advance) so I don't think it's critical ... I guess what the deal is is that if you have high trims, and you hit wot, the pcm adds enrichment ON TOP OF whatever the Ltrim froze at ... That part is confusing to me as nobody seems to have a sure handle on why and those that do aren't talking ... But that's the statement I put forth after talking to the LS1Edit tuner at Prodyno and Diablo ... I think someone also said that the enrichment will be more stable under more wot conditins with them zeroed too ... (still learning sorry)

should I increase (+) the "power enhancement" to get the trims to +1.5% at WOT?

OOPs mis-read that ... No +1.5 is not a magic number ... I am just happy with it as my cruise is slightly neg and my wot after only a little driving is almost perfect at that 1.5 ... I am sure my trims will even out even more as this has been the case after a reset before ... I guess I'm a little excited that I'm +1.5 and not over +8 like I was ... With RFG I was at +10.1 at wot ... LOL... I want a little more enrich command at wot anyways ... Yours look great to me ...

should I keep increasing the spark until I see some KR then back it off to the last setting where there was no KR?

That sounds good, but if it were me, I would either toss in some room or take into consideration that if you pull something or get some weird gas you should back it off ... I sure you already know the tendency to detonate is based largely on load and fuel quality/octane...

I'm sure I did more to confuse than help ... I wish I had more concrete observations, but this is where I'm at in the learning curve ... I know what I need to do on my stuff, but when it comes to diagnosing different issues like yours, I am doing my best ...

11H

 

[jonboyNY]

Ok.. LOLOLOL

what i mean for 2-5 +- HP is in addition to the HPP3's 14...so you might get 16, 17, 18 etc HP roughly. My opinion the diablo is better then the HPP3.

Also, the HPP3 got me 14 rwhp thats for sure...when we did the dyno....I had the HPP3 settings in for months already there. When I got the dyno done, those settings were there for months and the pcm didnt reset nothing. We got the 251 rwhp when i took out the HPP3. So you see the numbers with the HPP3 were there, even when driving for months with those settings, the only reason why I took off the HPP3... was because LS1EDIT was thought not to be reading and downloading correctly. It turned out to be the laptop, not LS1EDIT. Otherwise I would of never knew the difference.

I know what the difference is between autotap and efilive LOL...i forgot to put and "or" there.

Now I have 283/295 RWHP/TQ showing with a flywheel HP/TQ of 343/357....whats the percentage of loss there? LOL

And how many dyno sheets from reputable performance shops you want......that give 350RWHP++++ on a silverado, 350 is not the usualon the silverado.....Call Magnacharger directly......most are between 380-400 RWHP.....if you dont believe me CALL...exact words from them. 805.289.0044......also most guys who did this got 375 + rwhp...so thats why I am wondering....and those 375 numbers I seen dyno sheets.

And in referrence to Johan....i dont know this guy, sounds like a real great and knowledgable person, but I have to disagree on something LOL....if you expect to address the concerns of a 5.3L IN AN AV...because the AV is different then other 5.3L trucks....you have to have the truck there to tune period....you may come close, you may even have great gains, but you will never be on point unless you do the testing and tuning right at your face. This is why I have chosen for SLP to do it, and spend the money. The only reason why I went to them is because they know their poop and it was close to me. Everyone else is a pure BS artist that i talked too.


Thanx.

 

[Y2K_Silverado]

11H, thanks for the info . I just wanted to check but it seems that my tune is pretty much on as far as the LT's are concerned, cruising home last night, they stayed at -.78% with a constant load at 70 mph. Every time I would punch it, they would go to 0.00% which is good. I see what you're saying about being happy with your LT's being at +1.5% at WOT now considering they were above +10. The KR advice is well taken, I don't think I'll put it right on the edge of KR. If I do get some bad gas or throw a load in the truck, it may put me over the edge and may cause some KR.
Thanks again, Jim

 

[CraigF]

Just wondering, do you guys know what LOL is? Jeff (11h) and Jon--are you REALLY laughing out loud every time you post that?

BTW, I'm enjoying the tuning debates. I wish I had the budget to get a Diablo or the HPP3. I'd be happy with either, I think.

Craig

 

[11H]

Now I have 283/295 RWHP/TQ showing with a flywheel HP/TQ of 343/357....whats the percentage of loss there? LOL

21% ... But your Z71 Avalanche is much more than that ... A Typical loss(light driveline in a direct 6 speed F body is 16-18%, and in an F-Body auto, is about 18-20% due to the torque converter loss) So trust me, you have more loss in your av bud ... Your flywheel (figuring 283 RW) is about 368-382 ... If SLP is dictating the loss of only 21% to you, I'll venture to say someone has their lines crossed ...

what i mean for 2-5 +- HP is in addition to the HPP3's 14...so you might get 16, 17, 18 etc HP roughly. My opinion the diablo is better then the HPP3.

So then my 10-15 expected gain is not too outlandish then ...

Also, the HPP3 got me 14 rwhp thats for sure...

I wasn't there so calling foul would be wrong for me to do ... I will say that if ProDyno saw those type of gains from the Hypertech, they would be selling them by the boat-loads ... They have never seen much for gains since Hypertech went 50 state legal ... On the f-body LS1's they make about ZERO power ... BUt experiences I'm sure vary ...

And how many dyno sheets from reputable performance shops you want......that give 350RWHP++++ on a silverado, 350 is not the usualon the silverado.....Call Magnacharger directly......most are between 380-400 RWHP.....if you dont believe me CALL...exact words from them. 805.289.0044......also most guys who did this got 375 + rwhp...so thats why I am wondering....and those 375 numbers I seen dyno sheets.

So you're saying the Radix makes 145-165 RWHP on a bone stock Silverado ? (That's hard to believe especially when they're runnig avg boost) ... If they said that, I have less respect for Magna now ... (Again, manufacturers claim in which you did not witness ... I believe manufacturers claims alright ... Maybe their test truck made that with a special tune on 100 octane gas in December running non-retail boost or another mod? ... (bone stock 2wd silverados rw about 235 give or take) ... And you've seen sheets that make 375? ... That's 140 RW Gain ... That's getting down there better ... Maybe that is believeable in December in some states ... But still a little high ... Have you ever seen what the non-intercooled radix makes on the LS1 Vette ? ...

And in referrence to Johan....i dont know this guy, sounds like a real great and knowledgable person, but I have to disagree on something LOL....if you expect to address the concerns of a 5.3L IN AN AV...because the AV is different then other 5.3L trucks....you have to have the truck there to tune period....you may come close, you may even have great gains, but you will never be on point unless you do the testing and tuning right at your face. This is why I have chosen for SLP to do it, and spend the money. The only reason why I went to them is because they know their poop and it was close to me. Everyone else is a pure BS artist that i talked too.

OOOK ... Yes I guess we agree on one thing ... About the BS artist part ... The aftermarket world is full of it no doubt; that's why it's so hard to know what to do and not ... Now as far as your assertion about Johan and the av, I think you're being a little harsh ... I said to you before that I am hoping to see about 70% of the results that one might see having my avalanche "in-hand" ... Now Johan my friend has avalanches on the dyno all the time as he also has other things with 5.3's ... I am also willing to bet lunch that he has tuned more GM trucks than SLP has ... And if we include Fords, Johan and/or diablo takes the cake ... I have been following SLP since 1996 and they are not "Gods" ... IMO ... Tuning is not so complicated as to think one entity has the sole "Godly" answer ...

Hey one last question ... If SLP sooper dooper tunes your truck with all your mods and you roll out of the garage and then 6 months later have some issues as far as KR or towing/hauling compatability on the road, out of state, what are you gonna do ? ... Do they give you a flasher to reduce tuning aggression ? (I'm sure they'll take into account it's a truck, and you might get some bad gas, and you might have to push a 45 MPH headwind) ... I guess I'll keep my "half-assed" diablo with me so if I run into some bad gas or need to haul some weight, I'll have the ability (myself) to upload a revised tune into the truck or return to stock ... It is worth that alone for me to have several tunes and my half-assed programmer ... Peace

11H

 

[11H]

Oh, hey jonboy, just thought of this which is what helped me decide on the custom/programmer route ...

Ask Butch how well his tuning was written from Superchips custom dept on his set-up OVER THE PHONE ... (and I hardly think his tuning was run of the mill ordinary... ) ... It's all about how well you communicate to them your info ...

The only reason I didn't go with Superchips custom was due only to cost ... ...

11H

 

[bonedog]

Hey 11H maybe you can shed some light..... what do you suggest for a chip/programer for a NA 5.3 w just an airbox and muffler?? want better MPG not MPH.

-BD-

 

[11H]

Hey 11H maybe you can shed some light..... what do you suggest for a chip/programer for a NA 5.3 w just an airbox and muffler?? want better MPG not MPH.

-BD-

bonedog,,,

I don't know if I could suggest a programmer for the sole purpose of MPG increase ... I think that anyone that advertises this as a benefit will also say that the results vary greatly ... It depends on so many variables, and if you DID get better MPG, it would be a very small amount... Probably not measureable by regular means...

11H

 

[bonedog]

Thanks for the quick response...Ill save the cash and do some other mods instead. Thanks again.

-BD-

 

[CraigF]

Thanks for the quick response...Ill save the cash and do some other mods instead. Thanks again.

-BD-

Just to point this out, let's say that some mod gives you a 2 mpg increase (I picked 2 just because I felt like it!). Let's say you drive 15,000 miles per year and were getting 15 mpg. That's 1000 gallons of fuel. Now you mod, and get 17 mpg. That equates to 882 gallons of fuel. Let's also assume that gas is $1.50 a gallon, saving you about $176 per year.

It would take about 2 1/2 years to justify the cost of a $425 programmer based on a 2 mpg increase.

This math is true for any mod. I'd love to mod to get better gas mileage, but the cost of the mod will outweigh the fuel savings in most cases.

Craig

 

[11H]

Update... Got a couple tunes today, one has the 1-2 shift thing licked and offers very nice shifting everywhere ... (They said they played with a truck today and did some testing and wrote my tune from that)

2nd tune is now playing with the kick-down settings on the trans ... I gotta try that one yet ...

So far just tweaking driveability stuff on the 87 tune ...

11H

 

[jonboyNY]

11H I think your getting a lil pissed offffffffffff! LOL Bro, I hope your not LOL I am talking not bad mouthing....if thats the way you taking it from writting, well I apologize cause that is not what I am trying to do, and believe I talking to you as a friend, not because I am worried or anything believe me.

NOW...I never said SLP were gods, and I never said SLP is the #1 authority on tuning. There are many good tuners and many good aftermarket dudes. BUT, the numbers I am talking about from the Radix on silverados are true. Take Lingenfelter, who gives 475 HP at the crank from just a regular install of the radix with their tune on a 5.3L. And trust me THEY ARE GODS in the tuning world, in fact they work with SLP on parts and tuning issues, you can check that out.

Now in referrence, to my HPP3 my truck is a 2003, I know the pcm had a few upgrades to a/r etc. Maybe the 02s and 03s have a better gain with HPP3 but for sure that was my gain 14 RWHP...I will give you my settings and you try it and dyno it. LOL

Now I took my truck which I never mentioned before to a friends dyno shop who has a 248 dynojet. He gave me 286.8 RWHP. The driveline losses on a 4L60E are not as high as you think. When you change the TQ converter to a higher stall you will lose HP, but I have a stock TQ converter.

And Butch's custom tune, I know already for the most part how he developed it and how he got it, among other mods he did. Custom tunes can be done, you just have to speak with them directly or through your aftermarket guy.

When I am all done, I will not only post my dyno numbers but I will post a video of my quarter mile, just so I can really prove my stuff.

And Magnacharger claims an average 130-145 gain on a 5.3L silverado, call them up LOL...forget them call lingenfelter 2607242552.

Either way, I will show a very fast AV very shortly for the time being, until someone does a 6.0L swap on the AV with a radix.

Take care bro.

 

[magragc5]

Not that I'm looking to jump in this, but why not
There is just as much driveline loss due to the transfer case and heavier driveline components (tires axels etc.) of the Av than the tranny itself. Since most stock Av's dyno at about 215-220 rwhp and the factory CLAIMS 285 fwhp, I would place driveline loss at about 25%. All this is BS, its what you put to the ground that counts! If your truck makes 500 hp at the flywheel and 220 at the wheels it'll be just about the same as a stock truck.

As for your readings 11H, are you using this during real time monitoring as available on the predator? I just installed the factory (diablo) software on my truck, but increased the shift firmness to +25 and shift duration to -25, and the shift is still slow, like the truck falls flat under WOT then shifts soundly into gear. I think the TQ mgmt is still quite there on the shift but is definately gone off the line!

Game On!

Ed

 

[11H]

jonboy,,,

I'm not pissed It's just the way your words are hitting me ... Sounds like you think I'm full of it and you're preaching to me or sumthin' ... Now that that's out da way ... We're cool ... Now on the topic of loss; I want to finish it because Fast Eddie is right, it's what you get to the ground ...

The whole reason I say Autotrac = 30-35% is because I have seen trucks dynoed and it's sad how low the autotrac trucks put down ... I have seen old body chevys and Fords with a 4x4 driveline have less loss ... I would say 30% is standard over here and 35% is the poor guy with a sapper ... I think there's a clutch adjustment in the autotrac that causes drag or something and that's the question at the dyno shops ... Maybe this explains why some autotracs have perfect blue fluid after 50K and others are burnt pretty bad after the same amount ... So who knows ... I just think there's a variable there ... (maybe too this is why the venerable don't dyno decal is under the hood?) 2 HI should be 2 HI if it's selected so why the sticker ? ... I can see why the Escalade has it but why part-time autotrac ... This is the info I go from when I say 30-35% worst case ... Maybe there is no drag and it's something else with autotrac ... But again it's moot ... It's what you put down and how much you're makin' under the curve ...

That's my story and I'm stickin to it ...

11H

 

[dunes_av]

11h,

Any thought of hooking the Av up to a 4wd/awd dyno? They are not common, but have seen them used to dyno AWD vehicles.

Be interesting to see the difference in "to the ground" hp with the Av in 2wd and the Av in awd/4x4.....

 

[11H]

As for your readings 11H, are you using this during real time monitoring as available on the predator? I just installed the factory (diablo) software on my truck, but increased the shift firmness to +25 and shift duration to -25, and the shift is still slow, like the truck falls flat under WOT then shifts soundly into gear. I think the TQ mgmt is still quite there on the shift but is definately gone off the line!

I'm using that and EFILive ... But it's a little hard to operate a 15" Dell lapper and the truck at the same time, so I use the pred sometimes too ... When my buddy is allowing me to use his EFILive, he's usually with me graphing and such ... Helps a lot ...

On the shift thing... They know about it ... If you read a couple diablo threads around here, it has been a common thing ... I have actually been doing some sampling of custom tunes from them this week and it looks like one or two of the 4 that I have are MUCH better ... So, once we get it licked, you can probably call diablo and reference my tune file and they "should" be able to send you one ... Like I said above also, we're messing with kick-down now (downshifting in drive)...

11H

 

[11H]

11h,

Any thought of hooking the Av up to a 4wd/awd dyno? They are not common, but have seen them used to dyno AWD vehicles.

Be interesting to see the difference in "to the ground" hp with the Av in 2wd and the Av in awd/4x4.....

You know me Grey, it's all about the budget ...

11H

 

[magragc5]

I thought that the shift problem was with '02's, I have an '03?

Ed

 

[i2tall2c]

I really like the idea of this Predator Project thread. I too have used Johan to create a performance file for my 8.1L
Would it be possible to create a "Predator files area" that
others could use the files as well? or are they specific to vehicle VIN's

 

[11H]

This Post is Concerning the 1-2 shift that some 1500 Avalanches have been having with the Preadtor ... If you have excessive "hang-time" on your 1-2 shift, this just might be your fix !


Details:

After 9 different tunes from Johan, hours of drive-time on the AV, and some excellent communication, I believe we have the venerable 1-2 shift QWERK fixed ... (bout time eh?)

Johan said that it would take too long for a revision to go through with this update, especially when they are starting to look at 2004 vehicles... He said he would not have a problem sending you guys the tune file via email to fix you up ... The contact info is further down in this thread ... I will say he is extremely busy and may take a couple days to get back with you ...

And if you're extremely nice, maybe he'll make you an 87 octane tune while he's at it (this fix file is for 87 oct, but it can be converted to a 93 I'm sure; good feedback here for him required) ... He told me he has no problem writing new tunes for the problem 1-2 shifters ... So "Ask about the 87 tune at your own risk" ... [You will need a power adapter that is 1000Mah at 12Volts ... top contact needs to be + !!! and fit the power hole in the top of the pred ... You will also need a 9 pin M/F serial cable and a PC] ...

BTW, my tune files are VIN specific so I can't share ...

11H