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Quick hypertechIII question

bonedog

bonedog

SM 2004
Full Member
Joined
Aug 1, 2003
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bloomfield,NJ
I keep searching and reading all the threads about the HPIII. They all say to have enough juice in the battery. I heard and read a few people say that it takes almost 30min of upload time to start off with. Now here is my question.. should I put a trickle charger on my battery as to make sure it won't go dead or too low on juice and scram the PCM??

Your thoughts on this a greatly apprciated.

:B: -Bonedog- :B:
 
The Hypertech will give a warning if the battery is to low. Do not load or unload if you get this message. Just take a spin and come back later and try it. The programming funtion shouldn't take more than five minutes, but it is very heavy on current draw as it talks to many devices at one time and sensors.

You may want ot write down your answer prior to programming so it won't take much of your time or risk to much of a power draw.

Steve
 
chevy04 said:
You may want ot write down your answer prior to programming so it won't take much of your time or risk to much of a power draw.

Steve
Click to expand...

??? ??? what do you mean?
 
Also i was just thinking and after seeing the pre radix dyno sheet what about short shifting with HPIII. Like instead of raising the speed when it shifts you lower it. Instead of +2 you make it -2 would that do anything??
 
bonedog said:
chevy04 said:
You may want ot write down your answer prior to programming so it won't take much of your time or risk to much of a power draw.

Steve
Click to expand...


??? ??? what do you mean?
Click to expand...
The Hypertech asks you questions such as shift point changes, etc. All of the questions are in the manual. After reading the manual you can decide "offline" how you want to do your programming so that you aren't taking a lot of time thinking during the programming process.
 
bonedog said:
Also i was just thinking and after seeing the pre radix dyno sheet what about short shifting with HPIII. Like instead of raising the speed when it shifts you lower it. Instead of +2 you make it -2 would that do anything??
Click to expand...
I think it certainly would make it shift "sooner". I don't think that is the direction that you would want to go. After the shift occurs, the hp is much lower than where it was before the shift occured. By using positive shift change numbers, you should see the shift transients shifted to the right, with hopefully less of a drop off in hp after the shift.
 
Oh ok Main One I see why everyone is going up with the shifts Your looking at keeping the HP up between the shifts. But I was wondering If you just basically city drive and highway and really don't do that much WOT would this help, IE short shifting?
 
The hypertech changes only apply when you are at least 85% of the way to WOT. Below that and the stock settings are used. (Some things like correcting for wheel sizes are always applied for obvious reasons.)

Some of the other programmers offer much more flexibility. I believe LS1 Edit allows you to fill in a matrix with throttle opening increments of 5%. With that much flexibility, you could possibly get the best of both worlds - having the truck shift sooner when driving with very little throttle, and later when you are stomping on the gas. With the hypertech unit though, you don't have that much control.
 
In another thread I went ahead an disclosed that I use to write the embedded code for this programmer and other performance chips.

You would not want to shift sooner as this would keep you out of the power range where you spend most of your driving style and speed. Other words, get 200hp and torque at 2800 instead of 4800. This gives you better performance for less effort which gives better mileage.

Steve
 
Chevy04,

I have heard that the HypertechIII programmer only yields benefits at 85% and above, of wide open throttle (WOT). In your experience, is this true?

I would like to get a programmer for my Avalanche, but I am looking for improvement in the lower rpm range. I just want to improve drive-ability, make it a little quicker around town. Any increase in low end torque would also be good.

If I understand your post correctly, the hypertechIII would give me the same HP I have now at 4800rpm in the lower 2800 range. Is this correct?

In city driving, I drive in 3 (not in overdrive) and usually keep it under 2500rpm. Do you think I would see an improvement with the hypertechIII?

Thanks for you thoughts on this.
KB5
 
The Hypertech gives performance changes earlier than 85% of WOT. That is myth. You should experience better shift patterns and better throttle reponse in low end as well as top side.

I will say that the max benifit from a Hypertech is achieved with 93 octane gas. Hypertech relies in as much cooling effect to the motor as possible for horsepower and torque. Less heat equals more power. Ford has a problem because most of their engines have high heat internal combustion engines, which result in loss of power, and burning oil due to evaporation.

If you buy a Hypertech, I think you will be pleased. I am using my dealers factory programmer right now. There just isn't much in the way of too much improvment on the LS1 motors, Those engines are tuned pretty well from the factory. Hard wired changes are the best.

Steve
 
Steve,

What kind of changes are you referring to when you say "hard wired"? Do you know of any specific hard wired changes that increase power? ???

John
 
Hardwire changes reflect items like pipes, mufflers, headers, Oil, Turbo charger, and items such as this.

My personal preference is Gibson exhaust, Eldebrock Headers, 3 inch pipes in and 2 1/2 single out. Catalyic converter needs the performer match from the same manufacturer, AMSOIL with SDF filter, K&N Filters, 8mm wires, cooler thermostat and opening settings.

I must be practical here, as this would amount to a ton of money, and only very little gain. The 04 motors from every manufacturer have moved the power band to lower end production. The manufacturers still run lean engines to meet EPA requirements and fuel regulations. Trucks are big money. Air intake and exhaust are always restrictive from factory because of the lean mixture. Oil is many times over looked. I assure you AMSOIL is one of the best out there and does offer long term extended care with no wear to the engine. The 1 micron filter is great. No, I am not a dealer, but the oil test I have run thru the years tells the story. Mobil 1 is great oil, it is just not made for extended use. I am lazy, and I like cool, clean parts.

The Hypertech programmer is OK, just not needed anymore for $350.00. If it was less, I would say yes, not for performance reasons, but tire changes, and shift changes. The 5.3 engine is probably about one of the finest LS1 motors every made. The 04 model is great as many have found out. I made a trip today totalling 278 miles, not quite the half mark on the fuel gauge, ran 80 all the way running 2300-2400, and in town 1500-1800 in comfort with lots of power to spare for such a heavy truck. The Avalanche is premium in build quality that I can see. I think on this truck the modes are not needed because of the factory tuning. They did it right. Some of the others, well we work on that. Ford and Dodge are the worst in terms of out the box performance and reliability.

For those that are changing the shift points my favorite is +1, +2, +2. This seems perfect for all around, but would depend what mods are performed. I have mine set like this stock. I may change the muffler only and keep the stock pipe. K&N drop in factory style air filter is all you need. We found no difference in air volume between the cone open type and the sealed dropin filter.

AMSOIL will not change at all for oil protection in 6 months as Mobil 1 will die off after about 2500 miles. I am lazy like I said so changing oil every year is OK with me. In Europe they are told to change the oil in the same vechicle every 15,000 miles. That oil is totally burnt. We are spoiled to changing every 3000. It is not nessessary. I have not tested RedLine yet, and currently looking at Royal Purple test charts. I do not like what I see at all.

Well I did not mean to get off topic here, but the Hypertech products are good, just that I don't feel they carry any value for the 04 models at the current price. There is a inherit risk, where hardwire changes do not.

Steve
 
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