Last night I took the car to a secluded place to test my babie out. 1st to 2nd gear everything looks, sounds and feels good. Now when I hit 3rd gear everything was good until I hit 7k rpm's. Just as I hit those rpm's I would hear these bursts of popping noises. It seemed that the noises were coming from my exhaust. I'm running off 93octane, but it seems that gas stations up north incorporate 10% ethanol in all their fuels. I'm gonna try a mixture of 100(unleaded) & 93 octane gas to see if it corrects the problem.