i hadn't heard of these until about 20 minutes ago!there seem to be some pretty good power gains to be had(@12bhp). Is there a downside to fitting one and am i asking for trouble by underpowering ancilleries etc? The car is a daily runner and does 4-5 track days a year. Cheers.
I have these fitted. Whilst they probably make a little difference IMHO approx 12BHP is somewhat optimistic! If you have a 6 speed box why not consider a diff swap, reasonably cheap and DOES make a very noticeable difference to the cars snappiness.
Hi Matt, Think the pullies were £200 ish plus fitting, expensive for relatively little! Wheels are 18"s if you go any bigger tends to do the handling no favours and they look (IMHO!) too big...Jason :-)