when shifting from 1st to 2nd at 6000rpm something slapped the floorboard.Felt like the rear end hit the stubber block or the driveshaft hit the bottom of the car.The car is stock.The tcs was on,so took it off and had the same hard hit.Any ideas?

 

my car has never seen 6000 rpm lol

 

Wheel hop?

 

Well if the stock driveshaft hit, then you should be able to crawl under there and see a mark above it. I doubt that was it though. I've never had that problem, but i wasn't stock very long. It'd guess wheel hop as well. Crawl under there and check.

 

k-member and torque limiters

http://www.cheperformance.com/cartge...208&cid=15