BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Has anyone unbolted after the DP's for track days?

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      04-02-2008, 07:29 PM   #23
Whats that smell?
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      04-02-2008, 08:06 PM   #24
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If anything, without significant improvements to the handling of this car you wont be able to take full advantage of the power we already have.
- 08 135i - Wavetrac LSD, AST 4100, Swift springs, Brembo GT brakes, M3 front sway, Meyle HD links, Dinan Camber plates, Whiteline subframe bushings, M3 rear guide and upper link, M3 front control arms, HP custom M3 front Strut brace, Megan rear control arms, F30 brake shields -
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      04-02-2008, 09:57 PM   #25
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Originally Posted by Mr. 5 View Post
Terry had cutouts on his car but he didn't notice any increase and it was just ridiculously loud so he went back.

I feel that if it relly benefited him then he would have kept them since he is so obsessive for being faster and faster. (aren't we all)
Based on this, I don't think it's worth it.
I have his old exhaust system with the cutouts. I've opened them up during my last 2 autocross events. Its loud, but not TOO loud... I still have my stock downpipes so...

Anyway, I opened them up less for power, more for the reduced backpressure on the engine, hopefully leading to a slightly cooler running engine. Right after my runs I see oil temps reaching 270+.
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      04-03-2008, 02:56 AM   #26
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Originally Posted by Sniz View Post
so you were dumping right out of the turbo?? I hope you didnt drive it that way!!
No from the exhaust. DPs unbolted from the turbo sounds horrible.
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