Okay, so I don't have my gauges in yet, so the only way for me to tell if I'm getting knock is to take it into my tuner an have it checked. But this is the issue I had this last weekend. I was racing someone and missed 3rd, so I let off and we went to race again. Now the last 3 times we had run that night I pulled him by around 4-5 cars. Then, after I had missed third in the previous race, we go again and he is right next to me. So i figure the knock sensor probably read knock (or thought it did) and pulled timing.

Later that night I hit a bump, a pretty good size one, but nothing bad enough to damage a rim. And the car just shut off on me. Now all the power/electricals stayed on, but the engine turned off.

So that got me thinking that maybe I have a bad knock sensor? Anyone else experience anything like this?

Oh, and I would like to add, that the tune I am running saw absolutely no knock on the dyno or on the road while tuning.

Oh, and the Relearn feature has been disabled in HPTuners.