Well if you guys will just wait, I would be willing to bet that Hypertech will have one out soon too. That will be the one, they have always had nice products, and say that soon they will have a programmer and air filter..
Also did some checking and the Whipple Programmer and the Granatelli programmer are identical, except that the Whipple does not have the diagnostic feature, and I do not know about you, but if something is wrong with the H2 and the motor, I am sure as hell not working on it with a little box... I will let Hummer fix it.... Just my 2 cents...
*my statments are based on conversations from both Granatelli and Whipple.
BADRAP
03 H2, Lux, Pewter, more upgrades soon..
Houston Texas H2 Hummer Chapter..
badrap@sbcglobal.net