I recently put a ported polished head on my g2. i have intake, p&p head, full exhuast and my car is running like ****. i went to the track last night and ran a 15.7, and everytime i came out the hole my car would just fall on its face. It feels like i lost all my bottom end. And everytime i drive my car it backfires, a friend said thats because my car is running so lean. Do i need to up my fuel ? also i have gsx eclipse injectors would those be alright to put on my car? I need some advice.

 

did your caar run like **** after you put the head on? you might want to make sure the head is not faulty. it might be a simple problem... like a valve adjustment. you might want to check it out. check to make sure youre getting the correct fuel pressure, too. i doubt the head would require anymore fuel than the ecu can compensate for.