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05-18-2010, 07:46 PM
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Hummer Professional
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Join Date: Nov 2008
Posts: 261
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Torque management?
Ok, first off I notice a big difference in power and torque in my 2005 H2 compared to me 2006 Envoy XL with the inline 6. (no duh!) However, I notice that when I punch it from a stop it has the same sort of "dead" feeling as the Envoy had. The power really starts to pull hard once it is moving and the rpms get up just a bit. I am guessing that this is due to the GM torque management? I had a PCMforless tune done on my Envoy, and it really changed that a lot.
Is there a prefered tuner for these H2's? I see the name Nelson comes up a lot. What is the general experience with tunes and removing TM?
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05-18-2010, 09:43 PM
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Hummer Professional
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Join Date: Feb 2003
Location: Palm Desert, CA
Posts: 470
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Re: Torque management?
Have it completely removed especially if you are going to do any kind of engine mods. Nelson is one of the best.
__________________
2003 H2 Hummer, Yellow,Polished Whipple Supercharged, Dynatech long tube headers, catback,18\" Ambush w/Toyo MT\'s,lots of goodies!
Y2K Corvette Millennium Yellow Convert/Blk/Blk, B&B headers, B&B Tri-Flo\'s, H-Tech MAG,GMS MAF, RM Racing TwinFlow.
1994 Chev Suburban Blown
1970 Trans Am balanced, blueprinted, ceramic headers, etc.
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05-18-2010, 10:42 PM
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Hummer Authority
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Join Date: Jun 2005
Location: Key Largo
Posts: 1,174
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Re: Torque management?
Several people have put the Corvette C6 servos in their H2 transmissions and been very happy with the results, with a crisper shift and more immediate acceleration. Not sure what it's going to do to the longevity of your transmission though.
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05-19-2010, 03:50 AM
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Hummer Authority
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Join Date: Sep 2005
Location: Texas
Posts: 1,795
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Re: Torque management?
Diable Sport Predator programmer allows you to disable it. There are 3 TM modes. You only want to disable 2 of the 3 modes or you will need to upgrade the tranny so you don't burn it up the clutch bands. Here is how I have mine set and these are the Diablo suggested settings:
Torque Management:
-TM Abuse ModeTime Limit - Off
-% Tq Reduction vs RPM - Off
-Upshift Tq Reduction - On
__________________
H2 SUT 4.56 Gears, Front Locker, Cognito Pitman/Idler kit & Idler Pivot Kit, Fab Tech Tie Rods, True Tech Trailing Arms, Edelbrock Panhard Rod, PML rear Diff & Tranny Pans, Corsa Exhaust, Dynatech LT Headers, Diablo Predator Programmer, Volant CAI, Warn 9500 Winch, Escort 8500x50 & ZR3 Laser Shifter, Delta Light Bar, Rancho Steering Stabilizer & Bilstein Shocks, Ron Davis Radiator, PowerSlot Rotors, Hawk Brake Pads
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05-19-2010, 04:45 PM
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Hummer Professional
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Join Date: Nov 2008
Posts: 261
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Re: Torque management?
Thanks for the tips, guys. I have been doing a lot of searching in here, and it seems that the top choices for tuning are either the Predator programer or Nelson Performance. My truck has an extended warranty, so the predator might be the better way since I can make it stock if I need to take it in?
__________________
2005 H2 SUV - Stealth Gray with Ebony interior - Third row - Exterior tire carrier -
Mirror caps - black bedliner
Roof rack rails - black bedliner
Wheels - Black bedliner on stock wheels
Gas cap lid - still chrome but will soon be black bedliner
Tail light guards - still chrome but will be black bedliner
Grill - Still chrome but will be black bedliner
Hmmmm, is there a pattern developing here?
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05-20-2010, 03:34 AM
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Hummer Authority
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Join Date: Sep 2005
Location: Texas
Posts: 1,795
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Re: Torque management?
Nelson makes a tune for the predator 
__________________
H2 SUT 4.56 Gears, Front Locker, Cognito Pitman/Idler kit & Idler Pivot Kit, Fab Tech Tie Rods, True Tech Trailing Arms, Edelbrock Panhard Rod, PML rear Diff & Tranny Pans, Corsa Exhaust, Dynatech LT Headers, Diablo Predator Programmer, Volant CAI, Warn 9500 Winch, Escort 8500x50 & ZR3 Laser Shifter, Delta Light Bar, Rancho Steering Stabilizer & Bilstein Shocks, Ron Davis Radiator, PowerSlot Rotors, Hawk Brake Pads
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