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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 > EDITED My new exhaust idea for modded 335's



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      11-03-2010, 11:56 PM   #1
Iwantm3
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EDITED My new exhaust idea for modded 335's

I was thinking if the best way to get power for modded n54's with a lot of boost is to let air out as quick as possible at the shortest distance , can we use E cut out http://www.quicktimeperformance.com/QTEC/index.php ??? and how far after the downpipes would that be safe to connect it , the also sell connector pipes that are bend towards the ground , just for the performance mod, and you can drive with your stock/aftermarket exhaust most of the time


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Last edited by Iwantm3; 11-04-2010 at 02:10 AM..
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      11-03-2010, 11:59 PM   #2
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It's called E-cutout. I had it on my old car and loved it but not sure how it'll work with all the electronic gizmos on 335. Also haven't had it on a lift yet so don't know if there's a place to mount it.

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      11-04-2010, 12:00 AM   #3
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Quote:
Originally Posted by Iwantm3 View Post
I was thinking if the best way to get power for modded n54's with a lot of boost is to let air out as quick as possible, can we weld in a butterfly in the beginning of the exhaust right after downpipes and have it open fully at a full throttle so it screams like a beast and gives performance only when you're at a full throttle ?
You would shoot flames out, Flames in/near engine bay = bad.
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      11-04-2010, 12:05 AM   #4
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Quote:
Originally Posted by Ghines1279 View Post
You would shoot flames out, Flames in/near engine bay = bad.
Yes that's true too, street cred +100 points!
I had a small 90° coupler after the valve that was pointing directly to the ground. Would occasionally shoot flames but nothing too serious.
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      11-04-2010, 12:27 AM   #5
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I think I have seen one on the forum somewhere, but I do not recall if it was linked to the throttle.
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      11-04-2010, 01:34 AM   #6
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ye electric I'm sorry

Last edited by Iwantm3; 11-04-2010 at 02:10 AM..
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      11-04-2010, 01:49 AM   #7
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Ya those are great ones. By buddy has those on his s4 audi and says they all use that brand. I was thinking about doing this also. What would the gains be if you had this after cattless dps with tune/intake/meth be?
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      11-04-2010, 02:07 AM   #8
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I'd say pretty decent that's the setup I'm running, so whenever you want you're in the quiet car whenever you want to race you open that shit up, the shortest distance and the quicker you let airout the better it is , he's using quick motor performance ?
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      11-04-2010, 02:41 AM   #9
michaelthepsycho
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I've had one of those. You just have to figure out the wiring and drilling for the switch.
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      11-04-2010, 02:42 AM   #10
Iwantm3
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on what car ?
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      11-04-2010, 03:16 AM   #11
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yes you can run them on your car.
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      11-04-2010, 05:30 AM   #12
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the other problem with having them dump under the car is that the fumes can get in the car. I cut my pipes on my Bustang, a little past the header, and fumes would get in the car and make everything smell like gas. However our cars do have better cabin weatherproofing/sound proofing than a 93 mustang 5.0
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      11-04-2010, 09:32 AM   #13
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I would not run them open when I drive, only when I'm on the airport strip racing, NOW question is, am I really looking at some hp gains being that I'm fully modded + meth having this done ?
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      11-04-2010, 11:00 PM   #14
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Quote:
Originally Posted by onebadmofo View Post
Yes that's true too, street cred +100 points!
I had a small 90° coupler after the valve that was pointing directly to the ground. Would occasionally shoot flames but nothing too serious.
LOL!



Street Cred +1500000 points.


My other car did this sometimes.. but NOT EVEN this huge.
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