Thread: Whistling
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      01-09-2013, 08:06 AM   #1

Drives: `09 135i
Join Date: Mar 2012
Location: Melbourne

iTrader: (0)


Hey there peeps,

Feeling quite good after an aftermarket FMIC install, I decided to take it to town. Open road, late at night, no cars, and no cops. Had my p3 vent measuring 0-100 times, and felt pretty good about a 5.06 time, stock car.

Anyways, I've started to notice a slight whistling noise when under load. It's not loud, but you can hear it. I'm not sure whether this is the normal sound of the turbos spooling, or whether I have a leak after doing the FMIC install. I've never noticed it before. Car is not throwing any codes, and with a time of 5.06, I don't think it's affecting performance. But still, could be something, right? I know I should have recorded it, but it's pretty faint in the cabin, and not sure whether it would be picked up by my iphone recording. Anyway, what do you guys think?