Originally Posted by Jamesb1

I just got my first etune. The car has a steady knock at idle, sounds like a clock ticking. The Check Engine light is on. The car won't go above 10 MPH. I was lucky to make it back to my driveway. I reflashed the ECU back to stock and the car runs fine now. I just blew my warranty for nothing. I'm a little angry to say the least.