I have a stock 04 h2 and I'm looking for better throttle response and better mpg.. I've done a search here and noticed most posts were very old, and new stuff comes out yearly, so tell what your running and if your happy..
Thanks,
Tags

 

https://www.hummerforums.com/forum/h...mmer-h2-28846/

https://www.hummerforums.com/forum/h...mmer-h2-27369/

https://www.hummerforums.com/forum/h...grammer-28684/

those should get you pretty much where you need to go. they are pretty recent from the past 8 months or so.

most will tell you a custom tune is the way to go, and it is the best way to get something from your h2.

im happy with my superchip cortex, it does what i want it to do and gives a bit of improvement with the mods i have.

steve

 

Saw your post.

Below are the specs from www.hypertech.com on your vehicle

2004 Hummer H-2 6.0L
Part Number 32500
Performance Gains
Premium Octane: +24HP +41TQ
Regular Octane: +17HP +20TQ
Adjustable Features
Shift Firmness 25%, 50%, 75%, & 100%
Shift Point -500 to +500 RPM
Speedometer\Odometer Correction For Gears 2.73, 3.08, 3.23, 3.42, 3.73, 4.10 & 4.56
Speedometer\Odometer Correction For Tire Sizes 24-54 inches 1/4 inch increments
Top Speed Limiter 81, 87, 93, 99, 106, 112, 118, 124, 130, 149, 168, 186, 255 MPH
Rev Limit 5200 to 6000 RPM in 100 RPM increments
Cooling Fans Stock, 180 degrees F, 195 degrees F
Return Back To Stock
DTCs Read and Clear
Internet Updateable


GW
Hypertech Inc.
</SPAN>

 

The hypertech sounds great but they don't advertise better fuel mileage. I'm looking for better mpg and hp too.. A friend of mine runs diablo predator and went from 10.5 to 14 on the highway. I wouldn't of believed it if I didn't see it myself. Can hypertech offer the same??

 

You have an 8000lb truck. Your wasting your time w a programmer. Forget about it.