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DIY: 335i Exhaust Sound Mod. Better, and even easier than golf tee mod.
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08-28-2007, 06:14 PM | #1 |
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DIY: 335i Exhaust Sound Mod. Better, and even easier than golf tee mod.
OK I know I am not the first to do this, someone had to clue me in, but instead of plugging, crimping, or otherwise disconnecting the vacuum line under the car, just unplug the actuator in the trunk in front of the drivers side tail light. I was a little unclear as to how this works, but it's dead simple, easily reversible, and doesn't involve digging under the car. Win-Win!
So a big thanks to whomever it was that clued me in... I like the sound of the dual exhaust all the time without the bypass, but I also like being able to quiet it down if I am going on a long interstate drive... So here's a Barney Style Step by step to a better exhaust sound on demand. :rocks: --------ETA: Perform at your own risk, Myself and many others have had no ill effects, but you never really know.--------------- Last edited by Revlis; 08-30-2007 at 03:15 PM. |
08-28-2007, 06:16 PM | #2 |
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Just that freaking easy... 10-15 seconds if you take your time... No Ball bearings, no crawling under the car, just dead simple and sounds great...
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![]() '13 TiAg over Coral, 335is | DCT | Prem | L7 | Nav/Idrive | CA | 19" "-------" A BMW is Just a Car, it doesn't make you smart, handsome, cool, or wealthy. Get over it. |
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08-28-2007, 06:37 PM | #4 | |
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My only concern would be if there was some emission device failure or something similar and it traces back to the actuator.
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08-28-2007, 06:38 PM | #5 | |
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the 325 doesnt even have this valve, right? i might actually give thsi a try now.... thanx for the great pics.
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08-28-2007, 06:41 PM | #6 |
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Far as I know it does not. 335s only I think.
You know I am sure that the ECU does record this as a fault. But I wonder if it really matters?
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08-28-2007, 06:56 PM | #8 |
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It will record it does it matter id say no. just wanted to make sure you knew the risks between this way and the others.. but if somthing ever happens and they check the comp it will show
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08-28-2007, 07:15 PM | #11 |
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and 330's
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08-28-2007, 07:17 PM | #13 |
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get a gruppe m rep intake.
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08-28-2007, 07:18 PM | #14 |
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Aside from obtaining the 7/32 ball bearing, the Golf Tee mod appears faster, imo. Both, of course, are super quick. I'd prefer the clean ECU, also.
Nonetheless, thanks for the good instructions. ![]()
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08-28-2007, 07:34 PM | #16 | |
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08-28-2007, 09:07 PM | #19 |
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You know, I wonder if it'll show a code when it's done the other way? I mean it's still rendering a piece of the car NON-Functional...
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08-28-2007, 11:31 PM | #20 |
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is there any bad side affects for this mod?
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08-29-2007, 12:04 AM | #21 |
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the 325 and 328 don't even have this valve.
it's nothing but sound dampening.
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08-29-2007, 12:05 AM | #22 |
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the actuator he's unplugging controls the vacuum that controls this valve.
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