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      07-27-2013, 01:44 AM   #1
itsme123
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Looking for Dyno Chart

Does anyone know where I can find a dyno chart of before/after install of an Eisenmann Sport Exhaust (axle back only) on an F10 M5? Thanks!

Mike
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      07-27-2013, 01:11 PM   #2
Rob///M5
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Quote:
Originally Posted by itsme123
Does anyone know where I can find a dyno chart of before/after install of an Eisenmann Sport Exhaust (axle back only) on an F10 M5? Thanks!

Mike
No relevant performance change from any axle back.

Downpipes net real gains.
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      07-27-2013, 03:33 PM   #3
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Don't know about Eisenmann, but Akrapovic has this dyno chart:

http://az79640.vo.msecnd.net/akrapov...2056fd4ec2.pdf

http://www.akrapovic.com/en/Automoti...isplayName=BMW M5+(F10) ME-BM%2fT%2f4+Evolution+Line+(Titanium)
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      07-27-2013, 07:55 PM   #4
itsme123
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Quote:
Originally Posted by Rob///M5 View Post
No relevant performance change from any axle back.

Downpipes net real gains.
Not expecting a gain, but actually expecting a minor loss at various rev ranges. Peak power will gain a tiny bit, but the real world driving mid range torque suffers just a tiny bit I feel. Especially the initial throttle torque during regular driving is slightly decreased. Just wanted to see and verify how much is lost. Looks like the Akra looses a bit of torque vs stock before 2k.

Yes, yes, I know. Stop driving it like a Prius and there would be no problem
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      09-19-2013, 12:09 AM   #5
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Buddy I am not so sure but try this http://www.turbomagazine.com/tech/03...d/viewall.html, I guess it will help you out.
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Last edited by CherryTom; 09-20-2013 at 07:00 AM..
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      09-19-2013, 01:01 PM   #6
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FWIW, at least regarding the Akra, the minimal loss in TQ and WHP under 2K is negligible. You won't notice it. Against the benefit of from 4-6K, plus the sound at that rev range makes it worth it all the $.

I don't have the Eisenmann setup...but the race sure sounds nice. Pick the sound you like and go with it! With any aftermarket, you'll have the windows down (minimum sunroof) all the time because the sound is much, much better.
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