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      07-21-2008, 03:05 PM   #1
nlpamg
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Evosport Pulleys, Anyone Have them?

http://www.evosport.com/product/prod...VO.PER.B92.P01

What do you think?

I think I would choose Evosport over Rogue Engineering any day.
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      07-21-2008, 03:08 PM   #2
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21hp for pulleys??? That's just about the most outrageous claim I've ever heard.
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      07-21-2008, 03:10 PM   #3
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Quote:
Originally Posted by nd54 View Post
21hp for pulleys??? That's just about the most outrageous claim I've ever heard.
it definitely sounds outrageous, but they did it with the M5/M6 engine...
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      07-21-2008, 03:19 PM   #4
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I got the email from them as well. +21HP for only $395 ???

I'm no expert on pulleys so someone should enlighten us.
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      07-21-2008, 04:08 PM   #5
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some literature on pulleys:
http://www.atiperformanceproducts.co...mper_dinan.htm
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      07-21-2008, 04:18 PM   #6
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Quote:
Originally Posted by CatchM3 View Post
Thank you, I get smarter everyday on this forum
Who said internet is bad for you?
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      07-21-2008, 05:03 PM   #7
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Quote:
Originally Posted by CatchM3 View Post


I've heard about this, and really wouldn't want to take a risk with pulleys just for that reason.
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      07-21-2008, 05:20 PM   #8
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thanks for the article! very informative.

one thing though, I know that some of the aftermarket pulleys are dampened. I wonder if this one and the M5/M6 pulleys are too. I know that evosport made dampened pulleys for the C32 and E55 AMG.

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Originally Posted by kyoshozx View Post


I've heard about this, and really wouldn't want to take a risk with pulleys just for that reason.
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      07-21-2008, 05:29 PM   #9
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While I agree with what Dinan wrote most pully systems dont offer underdriven crank pulleys anymore. The last pully set that I saw like this was for the E36 and that was over 6 years ago and around the time this particular article was written. I remember it from five or six years ago when pulley modifications were really really popular. Anyhoo, as long as you dont underdrive the crank then this pulley will work fine. However, if your service department finds out and you develope an engine issue, dont expect them to fix it under warrenty.

With all this being said, there are plenty of BMW's running around that have had upgraded pulleys for 100's of thousands of miles. Even M3 with underdriven cranks....

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      07-21-2008, 06:42 PM   #10
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To buy or not to buy, that is the question.


Evosport Pulley Features:
- Bolt-on design
- Billet aluminum
- Black anodized
- Does NOT modify factory harmonics or dampening
- Includes replacement belts and bolts
- Easily reversible
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      07-21-2008, 06:52 PM   #11
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I am sure this would void your engine warranty. But then again I could be wrong
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      07-21-2008, 10:55 PM   #12
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I'm calling BS on this and for the M5 and M6. No other company, from the most obscure to the most established, claims these sort of power gains. I would sum up Evosport with this cliche: caveat emptor.


Quote:
Originally Posted by nlpamg View Post
it definitely sounds outrageous, but they did it with the M5/M6 engine...
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      07-21-2008, 11:02 PM   #13
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Quote:
Originally Posted by nd54 View Post
21hp for pulleys??? That's just about the most outrageous claim I've ever heard.

+1
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      07-21-2008, 11:16 PM   #14
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so this is fake? Although the claims seem to be far fetched. Posting a faulty dyno is pretty slimy.

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Last edited by CatchM3; 07-21-2008 at 11:41 PM.
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      07-22-2008, 04:39 AM   #15
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Quote:
Originally Posted by nd54 View Post
I'm calling BS on this and for the M5 and M6. No other company, from the most obscure to the most established, claims these sort of power gains. I would sum up Evosport with this cliche: caveat emptor.
I have been to Evosport. Very legit company. They know what they are doing.
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      07-22-2008, 04:53 AM   #16
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Post from M5board.com, member bought and installed pulleys.

Evosport pulleys on a M5, with dyno. 26hp increase.

http://www.m5board.com/vbulletin/sho...light=evosport
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      07-22-2008, 09:26 AM   #17
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Quote:
Originally Posted by JetBlack5OC View Post
Post from M5board.com, member bought and installed pulleys.

Evosport pulleys on a M5, with dyno. 26hp increase.

http://www.m5board.com/vbulletin/sho...light=evosport
Read the rest of the thread. He's only getting 14 hp with the pulley upgrade and not 26 hp. He installed exhaust and removed charcoal filter before doing pulleys. His real baseline before the pulleys seem to be 432 hp. Then he installs pulleys 2 months later and gets 446 hp.

There are other potential factors here:
1. His car is new. It's possible that it can generate more power as it continues to break-in during the 2 months.
2. Weather effects. Not back to back runs.

If an M5 gets 14hp increase--assuming what I mentioned above does not result in a significant difference--I don't see how the M3 will get more.

21 hp is a lot. I don't see why the alternator and what else is driven by the belt would be so over-driven. Plus, there are other sorts of risks with installing untested stuff like this in your car. How can they say that it won't damage your car? How do they know? They attached many M3 engines on a testbed and ran them for 100000+ miles with this product to see what happens? Do you really want to take that risk on a $65k car for a 10-12 hp gain that you won't even be able to feel?

And, yeah, M engineers are idiots and don't know what they are doing, so they just left 21hp on the table for no reason, and these guys are smarter and know what they are doing...
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      07-22-2008, 01:13 PM   #18
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If you get 10 more hp from the pulley, its worth the money in my opinion.
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      07-22-2008, 01:26 PM   #19
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I had the Evosports pulleys on my M6. I was tracing a vibration issue, it turned out to be the flywheel but I removed the pulley.

There are lots of vids of people with pulleys and without.....

IMHO, I don't think it actually does anything. I don't miss them, my car is just as fast without them.

The big minus to the pulleys on the M6 was the oil temp is usually higher (I am sure the coolant was too but we don't have a coolant gauge)
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      07-22-2008, 01:42 PM   #20
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Quote:
Originally Posted by T Bone View Post
I had the Evosports pulleys on my M6. I was tracing a vibration issue, it turned out to be the flywheel but I removed the pulley.

There are lots of vids of people with pulleys and without.....

IMHO, I don't think it actually does anything. I don't miss them, my car is just as fast without them.

The big minus to the pulleys on the M6 was the oil temp is usually higher (I am sure the coolant was too but we don't have a coolant gauge)
How much HP did they claim for M5/M6?

I guess since M5/M6 have
500 hp, it is relatavely hard to feel the extra few horses.
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      07-22-2008, 01:43 PM   #21
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Quote:
Originally Posted by RealSanaii View Post
How much HP did they claim for M5/M6?

I guess since M5/M6 have
500 hp, it is relatavely hard to feel the extra few horses.

25hp?

I honestly didn't feel a difference.

I could feel the RPI air scoops though
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      07-22-2008, 08:57 PM   #22
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Quote:
Originally Posted by T Bone View Post
25hp?

I honestly didn't feel a difference.

I could feel the RPI air scoops though
Interesting point on the oil temp
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