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Perf: 2500 Specific Perfomance Mods

This area is for "the few, the proud ..." owners of the 2500 and their unique performance issues

6,259 Posts
429 Topics
Last post by Jimland
in Re: duramax conversion??
on April 16, 2019, 20:07:53 PM
No New Posts

Perf: Air Intakes Kits & Filters

One of the first and easiest performance mods you should make. Cold air intakes, FIPK and others.

10,277 Posts
873 Topics
Last post by Snakepit
in Re: Everything about Spe...
on December 23, 2018, 19:15:21 PM
No New Posts

Perf: Drivetrain Brakes & Suspension

Transmission, differential, driveshaft upgrades for better performance. Suspension and Braking improvements for the performance crowd

10,478 Posts
874 Topics
Last post by frito
in Re: GMT800 to GMT900 Bra...
on February 16, 2019, 06:05:49 AM
No New Posts

Perf: Engine Computer

Everything about tuning the engine computer for more horsepower. From programmers and modules to custom computer software & programs. Tune your truck to your needs.

13,424 Posts
1,010 Topics
Last post by rae61
in Re: 6.2L tuning?
on April 13, 2019, 06:29:44 AM
No New Posts

Perf: Exhaust

Lets get the air out of the engine now. Information about exhaust, cat back systems, shortie headers, medium and long tube headers, mufflers, tips & etc..

20,386 Posts
1,756 Topics
Last post by enoniam
in Re: Speed Engineering lo...
on April 17, 2019, 05:53:57 AM
No New Posts

Perf: Forced Induction

Serious horsepower, serious money. Turbochargers, Superchargers & Nitrous.

9,835 Posts
389 Topics
Last post by KY_BOB
in Re: Towing with a superc...
on February 16, 2019, 22:54:15 PM
No New Posts

Perf: Ignition & Engine

Performance mods to the ignition system. Includes Plugs wires and coils. Engine mods include heads, valves, rockers, coolant system etc

9,719 Posts
658 Topics
Last post by tyler2k
in Re: need some guidance
on March 27, 2019, 15:20:59 PM
Whether it's the 5.3 or the 8.1 share tips and tricks on how to boost horsepower, torque, and smoke the competition.
Pages: [1] 2 3 4 5 ... 13   Go Down
  Subject Started by Replies Views Last post
0 Members and 2 Guests are viewing this board.
READ THIS BEFORE YOU POST HERE! goo929 0 8,050 Last post September 19, 2002, 11:32:49 AM
by goo929
Fastest Avalanche list (track times) « 1 2 3 4 5 ... 17  All » KY_BOB 408 140,747 Last post February 19, 2019, 09:35:29 AM
by MyBigToy
Looking For Practical Mileage Increase Mods « 1 2  All » RedAV 36 12,653 Last post October 12, 2018, 09:45:32 AM
by Vaeagleav
what have you done to improve your MPG? « 1 2 3  All » jplumer 61 51,869 Last post April 11, 2018, 21:53:31 PM
by Jwh91
Best bang for the buck « 1 2 3 4  All » Vonderbach 80 46,493 Last post April 7, 2018, 01:34:42 AM
by Jwh91
So looking to build my '03 into a (semi) monster... redheadedrod 0 716 Last post February 15, 2017, 16:55:58 PM
by redheadedrod
100 horse more at the wheel? jwylde7 10 3,501 Last post February 5, 2017, 11:26:14 AM
by groo
Performance Mods! 04AvGuy 5 2,279 Last post January 28, 2017, 13:20:24 PM
by Z66Modder
Best WARRANTIED engine/torque/go fast mods for 07 and up???? Hanz Groober 9 4,744 Last post January 25, 2017, 22:00:48 PM
by XSKIER
New Avalanche Arrived, Time To Begin 6.0L Conv.! « 1 2 3  All » Jason_@_TX_Speed 58 15,836 Last post June 7, 2016, 08:04:30 AM
by igotzzoom
Just Getting Started EWD 0 956 Last post April 20, 2016, 11:03:48 AM
by EWD
some mods I got need more venomchevy 8 5,048 Last post March 3, 2016, 01:04:50 AM
by redheadedrod
Best Single MPG Mod? « 1 2 3  All » Oleksy 61 31,851 Last post June 15, 2015, 11:27:52 AM
by mavericknj
how to burn out?? « 1 2 3 4 5  All » 04avZ71 105 92,383 Last post February 10, 2015, 11:23:21 AM
by 09chevyavy
E 85 upgrade « 1 2  All » Birchboy 27 18,388 Last post October 6, 2014, 20:13:59 PM
by Rocky Mountain Sooner
Looking for performance with 1500 bucks « 1 2 3  All » sebs50 51 29,368 Last post August 22, 2014, 14:14:58 PM
by timfarn
what do u think my first performance mod i should do to my AV bigbrent 8 5,736 Last post May 23, 2014, 06:26:08 AM
by Maniac
Mods to suggest... Bolt on preferred... Klay23 15 6,621 Last post March 5, 2014, 05:57:32 AM
by Roody650iAvy
Avalanche finally meets the Dyno...video TXSZ66AVLANCHE 16 7,394 Last post December 16, 2013, 16:40:53 PM
by RB`s 2010 AV
HELP!! WANT more power!! « 1 2  All » Avalanche 1500 37 10,462 Last post November 22, 2013, 13:13:15 PM
by RB`s 2010 AV
hoo has the most horse power!! « 1 2 3 4  All » stogen 80 25,620 Last post September 16, 2013, 06:30:53 AM
by enoniam
CAI, Exhaust and Programmer Submariner 1 2,723 Last post August 9, 2013, 11:57:03 AM
by Submariner
0-60, who has the quickest Avy! AvyMan2093 12 4,521 Last post April 25, 2013, 18:53:36 PM
by Old No.7 Avalanche
Best performance mods for the money Bucks79 7 6,992 Last post November 1, 2012, 06:19:28 AM
by Bucks79
Advice with performance Mods needed!!! avking 10 5,129 Last post June 25, 2012, 18:57:59 PM
by MyBigToy
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