the system measures the difference in wheel speed between the 4 corners so if the speeds are corrected then the system will work again. essentially the system isn't broken, just being given incorrect info.
i would get some good tyres then maybe some good brake discs and pads if you want to faster round a track. the zed is the wrong car to go bhp hunting unless you have that 8k lying about the mechanic talks about.
as for the mechanics attitude i would make sure everyone i knew avoided that garage, pathetic attitude.
Put your wheels on or your LED lighting
suppose there a few i could put in wheels, interior LED's or the new secret project
i say secret project all the way
so im assuming you found this searching for trial bikes? or was it from the other aspect of the video and there's something you want to tell us before we go camping?