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      02-13-2018, 11:18 AM   #7
EJT86
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Drives: 2018 M2
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Quote:
Originally Posted by dakarwu View Post
The engine rev was while my foot was on the brake and completely stopped. It sounds like how the ICV acts on cold start but much louder. I assume since I didn't really let the cold start finish it could just be that.
thats been known to happen when theres a failing brake booster. a vacuum leak
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