BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST - View Single Post - Before you ask why your exhaust is broken and why only one side is dirty: READ THIS!

Cyanfall · 07-22-2018, 12:58 AM

Excepet warming up, i cannot make sense of why the car wanna close one exhaust even, or especially at eco pro mode. More exhausts means Less back pressure means better fuel economy right?

07-22-2018, 12:58 AM	#78
Cyanfall Private First Class 42 Rep 134 Posts Drives: 2017 f32 440i coupe Join Date: Jun 2018 Location: Toronto, Canada iTrader: (0) Garage List 2017 BMW F32 440 [0.00]	Excepet warming up, i cannot make sense of why the car wanna close one exhaust even, or especially at eco pro mode. More exhausts means Less back pressure means better fuel economy right?
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