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Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > Technical Discussion and Customizing your H2

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Old 06-07-2012, 02:50 AM
glennf1 glennf1 is offline
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Default Re: Best mods for money and performance

Quote:
Originally Posted by IRA51
Other then the trans cooler that will not give you more power ,but is a smart mod to do ,you aren't going to get any real power cheap . Makeing it louder with a free flow exaust and K&N sounds kool though . A SC or heads and cam package with long tubes is the way to go ,but you better get the trans up graded or it will fail . So if ya havent got at least $2500.00 to spend and do the labor yourself keep dreaming .there is no real gain with a prograhmer on a gas engine ,and sometimes they make it worse in hot climates like Phoenix. FYI my 06 C6 with padle shifter auto only made 20 hp more with LG long tubes and X pipes and Corsa exaust at a cost of $2400.00 . the best bang for the buck was getting rid of the run flats and going with Nitto envo's . But what the hell do I know ?Anyone telling you you can get a 50 hp bump on a stock H2 with headers and exaust has never seen a one on a Dyno for proof ,ain't going to happen.


Yes and no on the programmer. The timing advance is where you can get some free HP, up to around 10 hp gain. Your right about hot climates though as you can start to get spark knock. Everything else like shift points and firmer/quicker shifts don't add power but can make the truck a little bit faster.
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