Just purchased last year a 2005 Hummer H2 SUV
I originally went to the dealer to purchase the new H3 SUV, test drove that and it had no gonads, if you know what I mean.
It drove well, was quiet but no acceleration.
After driving the H2 I knew that was the one.
I also own a 2002 Chevy Silverado HD with Duramax diesel.
Installed a BullyDog performance chip and 5" exhaust with K&N air filter and holy cow that truck boogies.
I own a 1999 Chevy Tahoe 4X4 with factory police package. It is stock and does OK.
I installed a K&N air filter and Corsa exhaust on the 2005 H2 Hummer.
It increased performance quite a bit but I think that it needs to be Supercharged.

Any ideas from anyone for performance I am listening.
I was a Ford mechanic for 10 years, but devout GM man.

Jeffrey M. Alberts
Hammond, Indiana