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180mm vs 175mm pulley, worth it to upgrade?

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Old 02-11-2010, 12:28 PM
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2003 E55 AMG
Question 180mm vs 175mm pulley, worth it to upgrade?
Howdy all. I've been contemplating moving up to a 180mm pulley since I'm getting an exhaust and figured I could do one custom tune and might as well do a quick pulley swap. Is it really worth it to go with the bigger pulley? Vadim had posted what an expected increase in power would be vs pulley size (I'll dig it up later), but I gather there may be a concern with controlling IAT's. I currently have a bigger heat exchanger and have a split loop...what do y'all think? Thanks!
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Old 02-11-2010, 03:13 PM
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2003 W211 E55, 2003 W220 S600
I upgraded form a 175 to 180 iat pretty much stayed the same. Picked some hp and tq without a tune
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Old 02-13-2010, 02:18 PM
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Umm...bump for anyone else's input.

And thanks shardul!
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Old 02-13-2010, 02:50 PM
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whos pully kit are you using/going with? I need one as well from my car... but I don't want a piece of junk...
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Old 02-14-2010, 10:34 PM
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'03 E55, Range Rover Sport Supercharged, Ducati 748R
i'd go for it. you'll notice a nice bump in power. i know where you can get a nearly new one cheap too!
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Old 02-15-2010, 12:09 PM
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Originally Posted by chiromikey
i'd go for it. you'll notice a nice bump in power. i know where you can get a nearly new one cheap too!
hmmm, really?
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