i have a 95 z28 that is hesitating, i have replaced feul filter, cleaned egr valve with a new gasket,cleaned my kn filter, maf sensor, checked spark plugs and wires had my intake manifold gasket replaced which was really expensive but still with all that my car is hesitating and i can feel it mainly in like low gears and its when i am not all the way on the gas because when i smash its going no matter what. could it be this zex wet kit when i hooked up the feul maybey i dont know. help

mark
95 z 28 70,000 miles on it.

 

If your nitrous kit isnt armed, it should have no affect on the way the engine runs. Unless you have leaking fuel or nitrous solenoids.

Have you scanned if for codes? Have you checked the fuel pressure?

Misfires can be caused by things other than the ignition - injectors, valve adjustment, faulty A/F ratio, etc. And with the ignition, in addition to the plugs and wires, you have to look at the coil, the ignition control module (ICM) and the Optispark distributor and its wiring harness.