2003 VETTE BACKFIRE/BUSTING OUT
:x I HAVE ALOT OF PERFORMANCE WORK DONE TO MY CAR,EX,NOS,CAM ,ITS BEEN RUNNING GREAT UNTIL ABOUT 2 DAYS AGO AND WHEN YOU GO PAST 1/2 THROTTLE IT FALLS ON ITS FACE AND BACKFIRES THROUGH THE EXHAUST UNTIL YOU LET OFF OF IT AND THEN IT RUNS PERFECT,ANY IDEAS?