Hey guys

dont know how to describe this but my when i punch down my srt hard from stop, when it reaches around 55mph and all the way along to 75mph i feel something in the transmition something hard just as if the gear is shaking or maybe from the rear, but i think it might be the traction control and after 75mph this thing goes away eny ideas? My srt done around 1000miles so far, thats the only problem iam having so far and ofc the brake noise :P