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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Wed, May-02-2018, 04:35:04 PM   #121
CrookedCommie
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Default Re: Under-drive Pulleys, would you do them again?

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Old Wed, May-02-2018, 04:56:42 PM   #122
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Default Re: Under-drive Pulleys, would you do them again?

^^^

I've been considering doing pulleys down the road at the same time I do an electrical fan conversion. Did the RE pulleys on my 328i a few years back... Not a big change at all from what I remember, but every little bit helps I guess
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Old Thu, May-03-2018, 04:26:17 AM   #123
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Default Re: Under-drive Pulleys, would you do them again?

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Originally Posted by Paulo M View Post
If you were casually test driving m3’s with stock headers, then one day decided to buy one unkowingly with catless headers + euro sec1 you probably wouldn’t realize either. Too many variables especially when they’re all different cars.

For someone that drove an m3 to a shop with stock pulleys then drove out of that shop with that same m3 an hr later with underdrive pulleys, I can tell you there’s a noticeable difference. And I don’t do that placebo crap to justify my purchases.
In case it wasn't clear, I wasn't referring to the butt-dyno sensation, but heaviness of the steering or overheating or lack of charge from the alternator. I drove stock M3s and mine and the steering wasn't noticeably different. With the 4.10 diff on my car, it's not possible to notice the power difference from the pulleys compared to a stock M3.
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Discussing Under-drive Pulleys, would you do them again? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)