Pulley kit has 2 types, either those lightweight pulleys for NA engines that reduces parasitic loss of alternators and waterpumps etc. (Or even to alter the speed these things are turning)
Thew other type is for Supercharged cars (like the MB) changing the pulley will ultimately change the speed the supercharger is spinning versus engine speed. This will make the Supercharger blow harder and therefore more HP is gained.
By the way CAI aren't supposed to be that expensive is it!?!? Mine is like 250bux LOL (now I need some of those extension thingy to direct cold air into the intake LOL)
Go with Pulley, then maybe ECU... IMHO, those 2 should give you the most performance increase..... C32 already has AMG exhaust, I doubt you would gain much by changing it, maybe gain a throatier sound?? :P
errr...my car is in States ....i'm ganna go over there study ...so..yah..thanks for the informations ./:)
NP:) if u want anything for MB i can ask my friend for u... he's owns 3 MBs and is the first one to own a SL55 AMG in vancouver, he's got a lot of connections
不知道直接從brabus order complete car 有沒有保固說@@
這樣我就不用改了...
btw
i saw a Black SL with VIP style's body kit in richmond 2day, i think if ppl go to 置地廣場 a lot will see that car ofthen ....that car was soooooooooooo nice ><