07-29-2019, 10:12 PM | #1 |
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Exhaust valves
Just got my car today. Haven't had a chance to really mess around with it yet so I thought I'd ask this question. What is the best setting for the exhaust to keep the valves open? exhaust button and engine on sport?
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07-30-2019, 06:28 PM | #3 |
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I’m not a 100% sure, but I just keep the default setting (button on - green LED) and I have M1 button engine set to Sport and it seems to work fine.
Per the manual: During the engine warm-up phase, the V8 high-performance engine has a somewhat rougher running behavior because of the emission controls. When the engine is cold, the exhaust gas system has a slightly metallic undertone due to the nature of the system. |
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07-31-2019, 02:45 AM | #5 |
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Yeah! What he said!
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07-31-2019, 09:23 AM | #7 |
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I believe you can also un-plug the molex plug next to each exhaust while the valves are open thus leaving the valves "stuck" in the open position. Then you just tie the plugs back with a zip-tie.
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07-31-2019, 10:29 AM | #8 | |
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this method will throw a code i believe
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08-05-2019, 10:35 AM | #10 |
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10-27-2021, 09:16 PM | #11 |
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Same here, no codes whatsoever. I just did this little "mod" a few weeks ago and I really like it, and have no desire to plug them back in. There is a slight drone when cruising at about 2k rpm but not enough to bother me. I like being able to run the car in efficient mode and still have a nice exhaust note. I always thought that the valves were OPEN when the green light was on but as we all know that's not exactly how they work. I WISH that's how the button worked, either always on or always off then I would just leave them plugged in but this is the next best thing to me. Now I just have to find a good way to cap off these connectors so that they don't get wet...
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09-25-2022, 08:30 PM | #12 | |
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Not a BMW guy...but certainly an M5 guy.
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