jacvily

i installed an slp y-pipe. i now have a tremendous banging noise under hard acceleration shifting from 1st to 2nd. the difference in performance is amazing. i dont think it is the exhaust system as there seems to be plenty of clearance. someone suggested replacing the trans mount with an energy suspension one as i might be getting a lot of flex in the driveline with the added hp.? i wanted to get some more input. <img src="images/icons/confused.gif" border="0">