how to see if its dragging? my car is abit underpowered especially during the pickup....another thing is my brakes seems to lock up pretty easily too...when driving alone and when i jammed the pedal suddenly..but not at a very high pressure. where at that point i dont think it will lock in other cars that ive driven.

btw, got another question..isit possible for me to install the original tachometer that comes with the later b310's? mine doesnt come with it and the even the analogue clock is spoilt..thinking of getting the b310 meters with digital clock and tacho. i wonder if after installed, will all the gauges will work fine and accurate?