Whop Whop Whop sound from exhaust

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PatDTN

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Definitely telling you to go get some delicious Italian food. And maybe park next to one of those sexy Italian cars.
 

tom3

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I'd guess a real tight valve guide that loosens up when it gets warm. Holds a valve open just a bit. Better too tight like this than too loose. (these guys are sure having fun with this though)
 

Jonesy92

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Idk if you’ve got one, but I’ve noticed my esky and my Seville doing it. Seems to be secondary air injection motor/module for emission.
 

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