I have a 98 SVT, when i take it from the garage, it hauls nicely, but after a few minutes on the interstate in the hot air, the power is intermittant, like the car is suffoicating or something...hard to explain, its almost jerky the way the power curve acts. What can cause this, the engine block has less then 30K on it, with magnacore wires, motorcraft platinum plugs, i have a kkm intake, proflow maf with calibrator, bat y-pipe, and bosal cat back exhaust, and yet my car is slower then stock after it heats up. Any suggestions?
