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      02-15-2018, 09:54 PM   #71
Carbon.F30
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Drives: 2014 BMW 335xi (M-Sport)
Join Date: Jun 2016
Location: Toronto

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Quote:
Originally Posted by Blubaron79 View Post
On my MPE both pipes open up after warm up even in comfort. Which my previous two 35i models did not with the stock exhaust.
I also have the MPE, and both valves (at least on mine) are open - all the time. I checked using a flashlight, and the valve actually does not close when the car is off either, although I did read that that's probably normal.

I know normally the one valve is supposed to be closed on a cold starts, but I have started my car in the winter in literally -15C temperatures, after being parked overnight and I notice smoke coming out of both exhaust pipes.

Not sure if that's a good thing, anyone know if its a problem if both valves stays open on cold starts?
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2014 335i | 6 MT | M-Sport | X-Drive | MPE | Black Sapphire Metallic | Coral Red | MHD 2+ | DP/CP | KN Intake

Last edited by Carbon.F30; 02-15-2018 at 09:59 PM..
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