Under drive pulleys

P4lm3r · Mon, Dec-22-2008, 09:59:47 PM

I have to replace a couple of pulleys, and am trying to decide if I should just switch out to underdrive pulleys. I have the HK stereo, and I have no plans on getting any more audio equipment. One concern is that I live in the South and I am wondering if the compressor will be able to keep up in the summer.

I appreciate all help.
Palmer

**KnudsonsM3** · Mon, Dec-22-2008, 10:01:34 PM

Ok i will be the first to tell you that everyone on the forum thinks they are a waiste of money and that they dont add any power.

I had them on my M3s and i could see a difference. I felt no tq loss with the M50 manifold swap as well and i think that was largely due to the Underdrive pulleys.

**KnudsonsM3** · Mon, Dec-22-2008, 10:02:59 PM

Oh if you get them only underdrive the power steering and the water pump.

I had the UUC pulleys as well.

OahuMPower · Mon, Dec-22-2008, 10:54:45 PM

UUC pulleys FTW!!

I have them, and they were proven on a dyno in the most recent European Car Magazine to gain a couple HP

camdinans3 · Mon, Dec-22-2008, 11:15:25 PM

ive got them, good stuff if you ask me

ArBrnSnpr · Tue, Dec-23-2008, 12:08:30 AM

I dont have them, and never had but I like to go with the crowd, so - UUC FTMFW!!

tectonic · Tue, Dec-23-2008, 01:04:00 AM

I have them but I can't tell you if they make a difference. Previous owner installed them.

98_1LE · Tue, Dec-23-2008, 05:16:14 AM

I have the Turner's on the three accessories; could not "feel" a difference.

**KnudsonsM3** · Tue, Dec-23-2008, 05:36:35 AM

Quote:

Originally Posted by 98_1LE

I have the Turner's on the three accessories; could not "feel" a difference.

i could up above 100 mph. I raced people all the time. People that would take me by a half a car before would lose by a half a car. I say good mod

BleedsBlue · Tue, Dec-23-2008, 09:00:55 AM

Quote:

Originally Posted by P4lm3r

I have to replace a couple of pulleys, and am trying to decide if I should just switch out to underdrive pulleys. I have the HK stereo, and I have no plans on getting any more audio equipment. One concern is that I live in the South and I am wondering if the compressor will be able to keep up in the summer.

I appreciate all help.
Palmer

Am I missing something....what is the correlation between the HK stereo and underdrive pulleys?

They are a proven way to get some extra HP, and for an M3 they are actually cost-effective (comparatively, I mean). I would do it, replacement is the best time for upgrading

Mon, Dec-22-2008, 10:54:45 PM	#4
OahuMPower :FACEPALM: Join Date: May 2006 Posts: 26,505 Reputation: 0 Location: San Diego	UUC pulleys FTW!! I have them, and they were proven on a dyno in the most recent European Car Magazine to gain a couple HP __________________

Mon, Dec-22-2008, 11:15:25 PM	#5
camdinans3 Resident Rabble Rouser Join Date: Jul 2008 Age: 27 Posts: 13,139 Reputation: 0 Location: Charlestown NH	ive got them, good stuff if you ask me __________________ Andrew: AVUS 1995 ///95 Supercharged Club

Tue, Dec-23-2008, 12:08:30 AM	#6
ArBrnSnpr Likes M118LR Join Date: May 2007 Posts: 1,572 Reputation: 0 Location: Portland	I dont have them, and never had but I like to go with the crowd, so - UUC FTMFW!! __________________

Tue, Dec-23-2008, 05:16:14 AM	#8
98_1LE Registered User Join Date: Jun 2002 Posts: 332 Reputation: 0 Location: Dallas	I have the Turner's on the three accessories; could not "feel" a difference. __________________ 1996 M3 coupe \| 2001 Trans Am

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Mon, Dec-22-2008, 10:01:34 PM	#2
KnudsonsM3 Banned Join Date: Mar 2007 Age: 26 Posts: 10,168 Reputation: 0 Location: Vista, CA	Ok i will be the first to tell you that everyone on the forum thinks they are a waiste of money and that they dont add any power. I had them on my M3s and i could see a difference. I felt no tq loss with the M50 manifold swap as well and i think that was largely due to the Underdrive pulleys.

Mon, Dec-22-2008, 10:02:59 PM	#3
KnudsonsM3 Banned Join Date: Mar 2007 Age: 26 Posts: 10,168 Reputation: 0 Location: Vista, CA	Oh if you get them only underdrive the power steering and the water pump. I had the UUC pulleys as well.

Tue, Dec-23-2008, 01:04:00 AM	#7
tectonic Custom User Title Join Date: Oct 2007 Posts: 2,692 Reputation: 0	I have them but I can't tell you if they make a difference. Previous owner installed them.

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