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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > DIY: 335i Exhaust Sound Mod. Better, and even easier than golf tee mod.



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      08-24-2014, 07:33 PM   #661
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It does not show a check engine light. If your getting a SES notification you should check your codes. Pulling the plug has no harmful affects. The purpose of the flap is to warm the cats. If you live in a warm area it's not needed.

It will throw a shadow code so if your under warranty you will have to play dumb if the dealer see it.

Fault: Exhaust flap control / activation of the exhaust valve / Outlet valve
- Code: BMW 2F6C

Other wise the exhaust note is awesome.
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      09-20-2014, 01:11 PM   #662
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I did this mod this afternoon. Guys at the dealership told me I could cut the hose.. I didn't want to do that because that would probably overwork the vacuum. I drive on the highway daily and will have to update everyone if droning is a problem.. I guess we cant have cake and eat it too.
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      10-06-2014, 10:16 PM   #663
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i have a bov in my 335 , will unplugging this activator affect the performance of my bov ?
also , overall any loss of performance when doing this ?
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      10-07-2014, 08:01 AM   #664
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Quote:
Originally Posted by JJmia View Post
i have a bov in my 335 , will unplugging this activator affect the performance of my bov ?
Why it would?
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YouTube | 335xi Best 1/4 mile: 12.3@110 MPH | 335xi Top speed: 0-270 kph (165+ mph)
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      10-07-2014, 11:18 AM   #665
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Quote:
Originally Posted by Thomas Wolf View Post
I did this mod this afternoon. Guys at the dealership told me I could cut the hose.. I didn't want to do that because that would probably overwork the vacuum. I drive on the highway daily and will have to update everyone if droning is a problem.. I guess we cant have cake and eat it too.
Droning was definitely a problem for me which is why I bought an exhaustmeister. Leave it open in the city and close it back up on the highway. I programmed it to work via the Homelink buttons under the rear view mirror.
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      10-09-2014, 05:14 PM   #666
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Just read the whole thing and im all over the place. Did anyone have any problems in the winter time with this mod? (ie proper cat warmup)
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      12-07-2014, 06:41 AM   #667
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it pops a code, trust me. the previous owner of my new car did the same thing JB4 picks it up. just golf tee it. its just as fast. did mine with an old dart tip, took no more than 4 minutes, you can use a bolt even, did that with my friends. just as long as the vacuum is constant
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      12-07-2014, 10:28 PM   #668
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First mod to my 335xi, very similar to my Corvette with NPP exhaust in theory... makes it sound like it should've from the factory.
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      12-09-2014, 02:54 PM   #669
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Anyone ever make a switch so you can open and close it with the touch of a button? If so, please provide some DIY instruction
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      12-09-2014, 02:56 PM   #670
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Quote:
Originally Posted by gregsatt View Post
Anyone ever make a switch so you can open and close it with the touch of a button? If so, please provide some DIY instruction
You can do it with JB4, using the steering wheel controls.

Menu 4, option 4 - CANflap OFF
Menu 4, option 5 - CANflap ON

http://www.n54tech.com/forums/showthread.php?t=17441
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      12-09-2014, 02:57 PM   #671
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It has been mentionned about 10x in this thread...
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      12-09-2014, 03:01 PM   #672
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Thanks for the quick response. Planning on getting a JB4 in the next few months.

I'll attempt a more thorough search before asking next time
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      12-09-2014, 03:04 PM   #673
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np sir

you'll enjoy your JB4 !

here's my YouTube channel if you wanna watch videos of my JB4 335xi: https://www.youtube.com/playlist?lis...6IocezwbkwJO8r
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      12-10-2014, 12:55 PM   #674
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this thread needs to be locked and available for viewing only
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      12-10-2014, 07:02 PM   #675
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it should have been locked for a long time...

and all useful info should be in the first post!
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      12-10-2014, 07:29 PM   #676
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Just a heads up, doing this mod made my car instantly stall out in cold weather cold start. Would have to give gas for 10 seconds and then it would be fine. After replugging the actuator connector the car starts fine on cold start 2012 n55
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      02-23-2015, 03:10 PM   #677
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Cant find it on my 08 convertible -_-
Help
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      02-27-2015, 03:38 PM   #678
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gonna give this a try in the D
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      03-15-2015, 09:20 AM   #679
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if you re plug will the code go away or will it stay stored in the ecu?
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      03-25-2015, 07:39 PM   #680
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Is there and Audio Clip of it Pluged and anpluged to hear the differance?
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      03-31-2015, 01:15 AM   #681
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this is perfect thank you so much!
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      04-05-2015, 03:10 PM   #682
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I've tried to find these wires in my F34 (335i xDrive Gran Turismo) in order to try this mod. However driver side trunk doesn't look like E90/91/93. Any advise would be highly appreciated.
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