“I had the Perrin crank pulley fitted shortly after it was delivered. I am truly amazed by the difference it has made. I already have an i-drive fitted and have found that the pulley has made my vehicle as quick in acceleration as having the i-drive in a performane setting and the auto in sport mode. Unbelievably, my fuel economy has also improved. 10 out of 10 and 100% happy. Many thanks and best wishes, Daryl”
