What's the butterfly sound I hear sometimes when the car is cold traveing less than 20 mph?
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09-20-2006, 01:36 PM
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You'll probably need someone to check in person.
Like quickaudi said, check your codes. (vag your car)
If you like to do preventative maintenance, you may as well replace your stock bypass valves with 710N bypass valves.
I don't know how to test them aside from the audi tech's special tool to do so. They sound fairly distinctive when they are fried though, and they would make noise more often than when you describe.
If you like to do preventative maintenance, you may as well replace your stock bypass valves with 710N bypass valves.
I don't know how to test them aside from the audi tech's special tool to do so. They sound fairly distinctive when they are fried though, and they would make noise more often than when you describe.