I installed a set of Hooker long-tubes the other day along with a cut-out and a flowmaster cat-back. When I took the car for a spin after it was all installed, when I go to kick it, it skips real bad and has a lot of hesitation and it wont just take off. I checked all the sensors and nothing is bent and all of them are fine. Can someone please tell me what is wrong? thanks

 

Did you also recheck your spark plug wiring? It is easy to mix them up sometimes and plug them into the wrong locations.

 

I didnt check those-thanks

 

Scan the car and look at your knock readings; headers can generate false knock causing timing to be pulled from the engine resulting in hesitation.