Hello to all;
I have 2000 GTP, slightly modified, throttle body spacer, cold air intake, 3 inch down pipe no cat, with single O2 sensor, after market mufflers, ECU and a smaller pulley. The problem I am having is that I get a horrible vibration throughout the whole car only on acceleration. If I'm on the highway at 70 mph and I let up off the gas, its smooth riding. As soon as I give it just a little bit of gas to maintain that 70 mph, the vibration is back. The vibration is not in the steering wheel, just throughout the whole car. I checked and the wheel bearings are good, and there are new tires on the rear, all balanced. I'm not really sure where to go from here. Any help would be much appreciated.
Frustrated,
AK GTP
