Jayhova , I actually put one on with the 6466 and the 3" downpipe from Sasha to make it a full 3" system from the turbo back. It was actually much louder than my previous 2.5 MXP system both at idle which was a surprise and at all levels from cruise to digging into boost. I've only drove the car once since the install and it's just sitting waiting for the built block to get here. Hopefully I'm 6 weeks out now plus delivery time and install.
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