Muffler delete exhaust whistle on a 2001 W210 E55?
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Muffler delete exhaust whistle on a 2001 W210 E55?
The car im about to buy has 150k miles and it looks really good. It has minimal rust but there a few things i have questions about. a previous owner to the guy im buying it from did a muffler delete and at higher revs it makes an almost whistling sound, could this be easily fixed?