"whistle" noise in cabin

gemini.m3 · 11-03-2014, 08:30 AM

so is this normal or what I felt it yesterday when i was WOTing the car, but today I start up the car cold start driving to work and I keep hearing this faint steady whistle from the cabin.. oddly enough, if I push the car into sport mode w/ sport button the whistle goes away and comes back as soon as I put it back in drive w/ no sport?

never happened before or didn't notice, something I should be concerned with? I get a rattle on startup and sometimes between 1500-2100 RPM if I been riding the car hard, i know n54's wastegates had to be replaced but what about n55?

I did get a PE exhaust installed and i don't recall the noise before the exhaust but wouldn't it be louder with the windows down? I seem to hear it much better with the windows up.

gemini.m3 · 11-03-2014, 12:24 PM

sorted, took it back to shop that installed exhaust, apparently the line that runs to the stock exhaust flap wasn't properly closed off, all good!

11-03-2014, 08:30 AM	#1
gemini.m3 Major 1497 Rep 1,297 Posts Drives: 2022 M3 xDrive comp Join Date: Aug 2014 Location: Miami, FL iTrader: (8)	"whistle" noise in cabin so is this normal or what I felt it yesterday when i was WOTing the car, but today I start up the car cold start driving to work and I keep hearing this faint steady whistle from the cabin.. oddly enough, if I push the car into sport mode w/ sport button the whistle goes away and comes back as soon as I put it back in drive w/ no sport? never happened before or didn't notice, something I should be concerned with? I get a rattle on startup and sometimes between 1500-2100 RPM if I been riding the car hard, i know n54's wastegates had to be replaced but what about n55? I did get a PE exhaust installed and i don't recall the noise before the exhaust but wouldn't it be louder with the windows down? I seem to hear it much better with the windows up. __________________ 2022 M3 xDrive Comp 2020 M2 CS (retired) 2018 M3 Comp (retired) 2015 335i (retired) Last edited by gemini.m3; 11-03-2014 at 09:52 AM..
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11-03-2014, 12:24 PM	#2
gemini.m3 Major 1497 Rep 1,297 Posts Drives: 2022 M3 xDrive comp Join Date: Aug 2014 Location: Miami, FL iTrader: (8)	sorted, took it back to shop that installed exhaust, apparently the line that runs to the stock exhaust flap wasn't properly closed off, all good! __________________ 2022 M3 xDrive Comp 2020 M2 CS (retired) 2018 M3 Comp (retired) 2015 335i (retired)
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