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 - Car Makes 'EEEEEEE' Sound During Harder Acceleration

hunginator · 04-01-2019, 09:21 PM

Wondering if anyone here knows what's going on with my car or has experienced same/similar symptoms...

When I am accelerating harder than normal, my car begins to develop this supercharger-like sound/whine. It literally sounds like 'eeeeeeeeeee'. Once I let off the throttle, it disappears immediately. Again, this only happens when I accelerate harder and is audible with my windows down.

I'm not sure if this is related but my OEM charge pipe blew so I replaced it with a VRSF charge pipe.

Additionally, my 2012 135i with N55 has the PPK and PE. This sound is really making me worry and isn't giving me any confidence in pushing the car hard now... or at least until I figure out what the cause of this sound is.

04-01-2019, 09:21 PM	#1
hunginator Lieutenant 155 Rep 553 Posts Drives: 2012 BMW 135i E82 DCT Join Date: Dec 2012 Location: Ottawa iTrader: (0)	Car Makes 'EEEEEEE' Sound During Harder Acceleration Wondering if anyone here knows what's going on with my car or has experienced same/similar symptoms... When I am accelerating harder than normal, my car begins to develop this supercharger-like sound/whine. It literally sounds like 'eeeeeeeeeee'. Once I let off the throttle, it disappears immediately. Again, this only happens when I accelerate harder and is audible with my windows down. I'm not sure if this is related but my OEM charge pipe blew so I replaced it with a VRSF charge pipe. Additionally, my 2012 135i with N55 has the PPK and PE. This sound is really making me worry and isn't giving me any confidence in pushing the car hard now... or at least until I figure out what the cause of this sound is.
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