21-12-2014, 05:57 PM
Yeah as Piggy says, it could be wheel balancing. I had this issue with mine between 60 and 75 and the only time it was smooth was when it was 0% throttle or full throttle. Im sure you can guess which i did

Team Eaton
1999 China Blue 306 GTi6 - Eaton Supercharged - 214.5bhp 181lbft
1999 China Blue 306 GTi6 - Eaton Supercharged - 214.5bhp 181lbft