Quote:
Originally Posted by TrboMike
You can reach under the back bumper without jacking the car and unplug it. Once you do it once and know where to get your fingers to press on the plug to unplug it, its easy. (first time not so easy) Doesnt matter if exhaust is hot, its temp isolated so no burnt fingers.
Put car in sport mode while running and unplug=flap always open
Put car in comfort while running and unplug=flap always closed
My noise didnt exist while unplugged. Now I know: the flap is opening and closing in both comfort (hit the gas too hard, it will open for power) and also in sport (does it close at low rpm for backpressure while not under boost? Dunno WHY but I can hear that it doesclose for some reason)
A blob of synthetic grease on the bearing outside of exhaust quieted mine (on exhaust pipe, not on flap motor)
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Thank you for the tip. I'll give it a try.