Leaderboard

Hi Luke, I have not looked into the supercharger pulleys yet, not had my XKR to look into really however, I did upgrade the pulleys on my SLK32 AMG and the gain was incredibly good although I also done a few other tweaks that may have pushed it up a little. The 32 was 347bhp standard but measured on a rolling road after my tweaks I was pushing 400. I did not feel it necessary to upgrade the cooling system. I would be interested if you find out a little more and now that you have mentioned it you have given me food for thought so I will be looking myself out of curiosity. If I find any info then I will pass it on.