Not sure which 2001 GMC Jimmy Air Intake Systems are right for you? We have over 76 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Derek M from Fort worth, TX said, "After installing the intake and resetting battery(which I didn't do during install) I felt an immediate increase in the 1-2 rpm and a HUGE increase in performance when gunning it. I installed an Accel ignition coil a week later and again felt a difference. Thanks for making driving fun again"