BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i) - View Single Post - Figure this one out, Weird exhaust note change...

Kcc · 09-07-2011, 04:10 PM

Flap opens up at 1.1k RPM, so I don't think that's the case.

Maybe non even road? Little hill up or down will affect the boost.

Kcc

09-07-2011, 04:10 PM	#3
Kcc First Lieutenant 9 Rep 373 Posts Drives: 4 Wheels with a turbo Join Date: Jul 2010 Location: Markham, Toronto iTrader: (0)	Flap opens up at 1.1k RPM, so I don't think that's the case. Maybe non even road? Little hill up or down will affect the boost. Kcc __________________ 135i - AW
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