They claim huge Hp gains with an adjustable performance ****. I have a Jet chip now , This adjustable setup sells for 69 bucks and dosnt hook into the modual, it ties into the Mass Air Flow sensor, Anyone try one?

 

Well I will try this chip and see if it delivers. I ordered the stage 2 which they say can deliver 60HP." Doubtful". they said i can leave my Jet chip installed and add new setup. What I like was you can dial in performance from the dash. I has more flexibility than the pre set Jet which is tame and set for 89 octane.with the header install, intake system, Magnaflow, jet chip ,lightweight ashtray we will see how she pulls the 35,s.

 

PCMofNC with HP Tuners is the way to go. The actual PCM is programmed with air/fuel ratios, transmission shift points and can turn off top speed governor and the PASSKEY ignition lock that goes wonky. ALL the chip does is try to fool the PCM with different data than it would normally see to change things. Much better to actually program the PCM IMO

 

2007-2008 Hummer H3 Performance Module and Chip - Jet, Jet Performance Stage 2 - JCWhitney

$235? and it needs 91 octane?

I paid PCMofNC to program my PCM and they dialed in the programming specifically for my H3 by test driving and adjusting parameters until it ran real good for $199.