At first when I told him he said he couldn't warranty it because of the adjustable boost controller(he installed) or maybe the B&G(that I installed) and said it was probably caused by detonation. I told him I was running 110 octane in it when it happened(which all but rules out detonation without a whole lot of boost/timinng issues) and he said oh. Told me I could send it back but he didn't know when he could get to it. I didn't want to do that because of his original estimate of time to complete my car, 12 weeks, turned into a little over a year. We are going to video it as we take it down and he did say he would pay for it if it wasn't caused by detonation, b ut we will see how that goes when we get there.