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mine will be here on thurs so hopefully ill have a dyno thurs or fri
 

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i have it installed. it's great. the car feels much better, more responsive and pulls stronger. i made a video of my car with rpi scoops vs a stock m5 before i got it installed. we will race again wed/thur with the pulley to see the difference. i will post the video when i have it done.
 

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From what I've seen the pullies really help to make the car rev quicker... I've done some testing with both an M5 and M6 and it works great. There are a few companies that make them and they are pretty much all the same from what I've seen.. 20 - 24rwhp increase..
 

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From what I've seen the pullies really help to make the car rev quicker... I've done some testing with both an M5 and M6 and it works great. There are a few companies that make them and they are pretty much all the same from what I've seen.. 20 - 24rwhp increase..
+1
 

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i have them. no regrets what soever.
car pulls much harder and quicker. throttle response has improved extremely.

rpi is the only way to go.
 

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pulleys an easy install? Will it effect warranty?
 

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Anyone switch from the Evosport to the RPI pulley?
I will be doing this within the week. I will post observations.
:cheers:
 

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pulley being installed tomorrow
Nero told me he had another m6 getting a pulley done this week. Get a before and after dyno if you can.
 

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Anyone switch from the Evosport to the RPI pulley?
Very soon. Since I just got back from oversea, the noisy sound in the morning still not bother me that much. When it does, i will let you know. BUt I don't expect any different in hp number or feel, just to eliminate the noise i experienced. But it worth putting them on dyno jet just for fun.
 

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Sorry if this has been asked before but is there any diameter difference between Evo and RPI?:dunno:

Kenny, what pulley noise are you experiencing?:confused2
 

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Sorry if this has been asked before but is there any diameter difference between Evo and RPI?:dunno:

Kenny, what pulley noise are you experiencing?:confused2
Same diameter, RPI just slighly lighter than Evo and OEM color instead of black.

Here is the thread regard the noise. http://www.m5board.com/vbulletin/showthread.php?t=111817
Seem like i'm the only one experience that may be due to belt size. Evo and RPI pulley are the same diameter, but rpi has a shorter belt. Just have to try them out.
 
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