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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > DP back exhaust/ scoops and DCI Dyno



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      10-17-2009, 05:44 PM   #1
Bagelfast
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DP back exhaust/ scoops and DCI Dyno

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Last edited by Bagelfast; 02-17-2011 at 07:57 PM..
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      10-17-2009, 07:22 PM   #2
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I am very interested in this as I am wondering what an exhaust will do for me as well as the benefit of scoops :P
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      10-17-2009, 07:28 PM   #3
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you will benefit on the scoops while driving, not on a dyno. I would say maybe around 15-20 whps?
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      10-17-2009, 11:40 PM   #4
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Quote:
Originally Posted by enrita View Post
you will benefit on the scoops while driving, not on a dyno. I would say maybe around 15-20 whps?
If the hood is closed the scoops can come into play i would think. But as most dynos the hood is open wont do much. But def. agree during driving with DCI it will benefit more.
Would love to see a dyno with hood closed DCI, and than hood closed DCI + scoops.
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      10-18-2009, 08:23 PM   #5
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They claim the HP gains for that exhaust are 11hp. No mention if that's crank or not, I assume it is and vendor HP claims are usually 85% more than what you actually get.

I would bet you see 2-3whp improvement at the dyno. I would assume with your listed mods that it would best be noticed at the track when your car is actually moving.
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      10-19-2009, 03:15 PM   #6
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so you have a catback exhaust or a turboback?
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