Quote:
Originally Posted by mblaucoupe135
In the last few weeks, I have noticed a slight fluttering like sound I think is coming from the engine bay when I let off the throttle. The car seems to still be running fine but the noise is a bit concerning since it recently started occurring. I should mention that I have a Dinan air intake on the car as well as their piggyback tune. Has anyone else experienced something like this? I know some people have complained about a wastegate rattle on bmw turbo engines so maybe that's what it is.
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Recirculating valve flutter is sort of an expected sound with an aftermarket air intake.
When you're pushing the car a bit more it will flutter more loudly. Sometimes mine makes the full F&F BOV flutter sound.. Curious how loud it will get at AutoX this weekend
Does it sound like this?