I resently had some headers installed. after the work was done i took the car for a test drive. When you let the clutch out and start out with low rpm the car wants to stall and lurch ahead. Head does a real bob with this. I am wondering if anyone else has ever encountered this and if so what could have occurred. all the egr stuff is still installed there are no codes. It does also hesitate if you gun the engine while at speed. Maybe there is a air loss somewhere. Any help would be apprieciated. cheers