Join Date: Jun 2013
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Hey Trick what muffler did you use and does it get rid of 50% of the squeal when the wastegate opens?
I've got the same as you, with a tight fit around the rubber shock boot as well. I was straight pipe all the way, then put on the Flowmaster Huspower and was NOT impressed. It took away maybe 20% of the "squawl" (???) sound and I still dont like it. I like the sound that comes from the older 6.4 but I know it's totally different.
I'm tempted to divert the 5" into twin 3" Flowmasters made for the gas engines, then actually run twin 3" tubes out each rear corner. Expensive adventure if it winds up sounding like crap again.