S52 Underdrive Pulley Kit

[ACHTUNG]

What do you recommend for an under drive pulley kit for the S5X?

UUC? VAC? TMS?

[bimmerteck]

the TMS pulleys fit and look as close to stock as aftermarket parts can get so if your looking for stealth that's what you'll want. EvoSport through bimmerworld are nice, somewhat flashy though and underdrive slightly more than the TMS pulleys.(they seem to have an ordering glitch that they had a few months back fixed as well now too.) The rogue pulleys are even more underdrive on the WP pulley than the TMS and The Evosport yet draw a little more attention than the TMS pulleys but no where near as flashy as the Evosport's.



Turner

Photo by systemdelete, on Flickr

EvoSport

Photo by systemdelete, on Flickr

[Adrian_Visser]

Those must be a newer design of Evosport pullies, mine are grey anodized aluminium.

[M-technik-3]

I have TMS they were second hand and have had no issues.

[bimmerteck]

Those must be a newer design of Evosport pullies, mine are grey anodized aluminium.

All three sets I'm comparing were purchased and installed in the last month in my garage. They may have looked differently in the past but this seems to be what they look like now.

[luckysnafu]

Just curious, do underdrive pulleys actually make a noticeable difference? Are they worth installing?

[Adrian_Visser]

My bad the ones I have are Eurosport. I wonder how much of the power increase you get would be cancelled out by running a Stewart high volume water pump...

[bimmerteck]

Just curious, do underdrive pulleys actually make a noticeable difference? Are they worth installing?

My bad the ones I have are Eurosport. I wonder how much of the power increase you get would be cancelled out by running a Stewart high volume water pump...

No clue on the waterpump but, my dyno experience with underdrive pulleys is in the posts below.

http://www.r3vlimited.com/board/showpost.php?p=2539167&postcount=94

http://www.r3vlimited.com/board/showpost.php?p=2539252&postcount=98

[luckysnafu]

Thanks for the info bimmerteck.