2002 GT rough idle loss of power 5000 rpm
After putting after market plenum/75mm throttle body and Diablo tune car ran great for a month. Then the motor blew off the vacuum hoses to the EGR sensor, destroying the sensor. Replaced senor and hoses and the car has a low RPM rough idle and hesitates with power at the 5000 RPM range. The tuner used to give error codes that said "this is normal for a tuned car". PS: Original factory tune Diablo tune nothing corrects the problem and no error codes. O2 sensor's in the front? I'm ready to go to the dealer 2 days and can't figure out. It ran better with the destroyed EGR sensor??? Thanks in advance.