ditch the chip unless you get it dyno tuned, we had that problem with the GTA except we went from a 305 to a 350 and barely gained any power. Put the original 305 chip back in and it ran like a champ and gained 39HP and over 50ftLbs. IF the sensors weren't way out of whack that is most likely your problem
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-Nick
9/11/01 NEVER forget!
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