Oh sorry I misread that. I just assumed my car would be knocking because of all the other gremlins under the hood. (weird electrical stuff) Yeah All the gas stations near me carry 93 octane so thats the only fuel i put in it. I had the TCS off and "Performance Shift" engaged. I had it in drive and it shifted into 4th right before the finish. Should I leave it in 3 instead of D to eliminate that last shift?