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Very late to the M2 game and want to try my luck with this older post.
Got myself into a pre-owed OG M2 just before the pandemic. It was somewhat an okay deal as the car did come with MPE installed and some OEM carbon fiber exterior trims. I noticed right after ownership that the valve would close on me randomly. A little reading on the forums suggested that it might be due to weak Bluetooth connections. As I don't plan to use this function often and the MPE would be out of warranty as the time of purchase, I just struggled it off.
Being OCD with lots of stuff, this was always in the back of my mind. Now that I have more time, I am circling back trying to resolve the issue. I did more reading on the forums and it seems that most people who got the MPE new had dealer replaced the entire system and that would resolve the issue. That being not an option for me to start with, I also try to find some aftermarket solutions. One I noticed is the CG Precision VSC-1/VSC-2. Does another had experience with this on the N55 M2's with MPE? I am getting mixed signals where CG Precision themselves is leaving a comment saying the 1 valve controller version (VSC-1) is what the N55 M2 should use. However, I believe the MPE has 2 valve motors. And the VSC-2 seems to be designed for the M2C with the S55 and other M3 or M4 models (sharing similar muffler setup). I am worried that the VSC-2 will not be compatible with the N55 engine MPE.
My alternative solution is to replace the remote first and then the receiver module after if it is still not working properly. This would be my last resort as it is pricy and also the whole Bluetooth controller setup is not reliable IMO.
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