01-22-2020, 03:25 PM | #1 |
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Exhaust valve acting really strange
So, I had my car updated (330i to 2019/11) and noticed it got noticeably quieter. Seems the exhaust valve isn't opening in any drive mode now? I coded sport+ back in and it only opens in neutral/park or reverse...
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01-22-2020, 03:50 PM | #2 |
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I read on other threads that their cars have become quieter on updating iDrive (mainly m340is). Sucks that it’s the same in the 330i. Many people have lost their pops and burbles too.
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01-22-2020, 04:40 PM | #5 |
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01-22-2020, 04:56 PM | #7 | |
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I know the burble/pop reduction effected all of the cars in the EU market, I hope to god they don't do it here. |
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01-22-2020, 10:02 PM | #8 |
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Btw how did you do that? Please say bimmercode
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01-23-2020, 01:05 AM | #9 | |
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I used ESys and LauncherPro as I like to have a nose around. Found some interesting model designations lol |
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01-23-2020, 10:29 AM | #10 | |
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Do you remember what all you changed to get sport+?
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01-24-2020, 09:23 AM | #11 |
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I disconnected my valve, best thing I ever did. Now I can actually hear the exhaust. I've gotten some comments on the sound being very good for a 4cyl.
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01-24-2020, 12:11 PM | #12 |
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I agree. It sounds really good for a luxury 2.0 4 banger. I had a B9 A4 before this, and while it was a good car, I hated the stock exhaust.
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01-25-2020, 11:59 AM | #13 |
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To my knowledge the valve is closed for a couple of minutes to warm up quicker - so if keeping the valve open has an impact on the sound it should be with cold engine only ? Did I miss something?
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01-27-2020, 03:12 AM | #14 |
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Hmm as far as I know, the valve stays closed most of the time unless you rev/load the engine past a certain point.
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01-27-2020, 11:03 AM | #15 |
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01-27-2020, 11:09 AM | #16 | |
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01-27-2020, 12:10 PM | #17 |
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Correct. At certain temps after a cold start, the valve will remain closed in sport mode until the engine reaches a desired temp. You can very clearly hear it pop open/closed after a minute or two.
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01-28-2020, 09:47 AM | #18 |
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Yeah, I've been looking into it and even Sport+ isn't changing anything.
Before my exhaust was open basically all the time in Sport+, now its not open at all. I have some pops, but they are only from one exhaust lol |
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01-28-2020, 10:50 AM | #19 |
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Maybe an issue with the valve then?
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01-29-2020, 01:21 AM | #20 | |
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I'm really lucky to not need a new motor too, given my car was in the affected build period. |
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01-30-2020, 12:42 PM | #21 |
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How did you do this? Any lights on the dash after it?
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01-31-2020, 03:31 AM | #22 |
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No lights. It simple enough, disconnect the connector plug from the valve in the rear.
To do this though follow these steps: 1. Car is warm 2. Place in Sport, wait for valve to open. 3. Disconnect plug from valve motor. 4. (Optional/recommended) Tape the end of the plug with elec tape or something similar. 5. I reconnected it to the motor and made sure it was snug. It protects it from the elements. And thats it, the valve will always be open. Its easier than the older vacuum ones.
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