best thing i have done so far.the combination of my trueflow intake and magnaflow dual cat back exhaust system and pcm just blows me away.how have i done with out it all. the acceleration is 10 times better and highway passes are so easy and effortless now with the pcm. i mean only $139 its a steal. i was a little worried after reading some of u guys did not see a whole lot but puting that pcm in its like a whole new hummer and i love it. i mean this hummers flying so fast i might need to do something with the brakes cause it takes longer to stop now. man am i love n it

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Glad to hear it! Watch your mpg go down for a while as your right foot gets a little heavier

 

I agree with alrock.......my right foot is a little soar the last few days from having the pedal to the floor

 

what name brand and where do you get it at