I have one in my blown small block Volare. 2 years no problems. Flashes to 5100, very close to where they said it would be. They offered to adjust it exactly if I wanted (slightly tighter). Car E.T. is off about .15 from a full race custom 8" converter. Drives very well on the street. Excellent people to deal with . Both Cope Racing and PTC. I would purchase from either one again.
Doug