I have an 07 Chrysler Aspen with a 5.7 Hemi. Has anybody out there tried one of those performance chips sold on ebay for about $20.00? What was your experience?

 

THe engine computer will negate the chip after a few hundred or so start-ups as it 'relearns'. Try Diablo Sport Tuners as they are true tuners and you can make permanent changes to the parameters of the engine,
FF

P.S. - I have a Jet Performance chip that I never took out of the wrapper for sale if you are interested.

 

don't waste $20. its just a resistor that lowers the engine temp signal. the only thing it will accomplish is to make your wallet lighter. wine, women, or song is a better investment.

 

Bullydog has good product, im friends with one of the programmers, so I got hooked up for free. They are worth it, plus it will do performance logging and other cool features.