10-14-2020, 05:13 PM | #1 |
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Valved exhaust question.
I have a '18 lci. and I was told by te dealer that they didn't do valved exhausts anymore. Ok. When I see the M2C's with valved exhausts, I feel like I am the only one out here told that story. NOW, I climb under the car, and see that an actuator is mounted and wired, I wonder what is going on. Can I use that actuator to make my valved exhaust work?
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10-14-2020, 08:27 PM | #2 |
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The valve is supposed to automatically open and close based on RPM's and/or driving mode. I could never tell when it would open and close on my car, but I ended up adding a valve controller so I can do it manually now.
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10-15-2020, 02:35 PM | #3 | |
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If you're talking about making a custom valved exhaust, then yes, you could theoretically do that. But making a custom valved exhaust would be extremely expensive, and would require a huge amount of time and probably several iterations to get the valve action correct. |
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10-15-2020, 02:56 PM | #4 |
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Drives: '18 M2 6MT
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10-15-2020, 05:51 PM | #5 |
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I do. I have the EVC by Macht Schnell. It lets me control when the valve is open instead of relying on the stock software. It installs with a few splices at the OBDII port in the driver's footwell.
I bought it when I ordered my full Dinan exhaust, but I'm still waiting on that to arrive. On the Dinan it will make a much bigger difference since having the valve open means a full 3.25" exhaust back, making for an incredibly aggressive startup. Mostly, I want the freedom to 1. Have a quieter start with the Dinan system early in the morning or in parking garages 2. Have the ability to close the exhaust near cops and 3. Drive around with the valve open about 95% of the time instead of relying on the stock software deciding to close it. |
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10-15-2020, 06:12 PM | #6 | |
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10-15-2020, 06:14 PM | #7 | |
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https://www.cgprecision.com/#!/VSC-1...egory=36145080 Cleaner install and can pair with the rear-view mirror buttons for controlling the modes |
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10-15-2020, 06:19 PM | #8 | |
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10-15-2020, 06:26 PM | #9 | |
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But once you get up in the RPM, it actually makes a pretty big difference in volume. The Macht Schnell one was pretty pricey at around 400 bucks compared to most, but you don't need a separate controller for it like you get with the VSC-1, M-performance exhaust, or Armytrix exhaust. It works of the BC button on the left stalk. Hold it for 2 secs to change from fully open to fully closed to stock. One of the best features it has is programing out the ASD. It also isn't detectable when he OBDII port is accessed, I don't know if that is the case for the VSC-1. |
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10-15-2020, 07:38 PM | #10 | ||
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10-15-2020, 08:29 PM | #11 |
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Yes, although on the stock system the difference isn't huge (but it is noticeable).
On the Dinan system I expect the difference to be huge. That full 3.25" exhaust all the way back to the cat is going to be super loud at startup if the valves are open. I regularly use the valve control on startup if it's super early etc. I turn the car on just to ACC, use the BC button to close the valves, and then start the car. |
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10-15-2020, 09:16 PM | #12 |
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