Re: NPP exhaust valves on my SW 3" pipe set
The system here in FBI land is using the DynoMax Utlraflow. These are straight thru w either tube. I didn't ask about Mike's positioning because of performance.
Rather it was for fit. Perhaps the SW muffs allow positioning on the inside. The DynoMax really have a better fit with the valve on the outside.
Al or Pete could offer better insight on this.
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