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XfireZ51 · 09-27-2018

Although my system is not B+B, it is a 3" ID using an Xpipe, NO resonator, DynoMax Ultraflow muffs utilizing C6Z06 NPP valves in tips. So basically, the B+B system for less $. I have a manual switch to open or close the valve on the inner tip. Flipping the switch, the aural difference between open and closed operation is quite noticeable, both outside and inside the car. I'd say 40% would not be overstating it. Its a very good sounding exhaust that is pretty quiet in a steady cruise mode even w both tips open. There are some areas in the rpm range where u get some vibration in the rear hatch area, and is subjective in terms of how much it bothers you. But at 70-80mph cruise, its a pretty nice setup. It also has a nice rumble at idle.

09-27-2018	#4
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,686	Re: B&B fusion cat back exhaust Although my system is not B+B, it is a 3" ID using an Xpipe, NO resonator, DynoMax Ultraflow muffs utilizing C6Z06 NPP valves in tips. So basically, the B+B system for less $. I have a manual switch to open or close the valve on the inner tip. Flipping the switch, the aural difference between open and closed operation is quite noticeable, both outside and inside the car. I'd say 40% would not be overstating it. Its a very good sounding exhaust that is pretty quiet in a steady cruise mode even w both tips open. There are some areas in the rpm range where u get some vibration in the rear hatch area, and is subjective in terms of how much it bothers you. But at 70-80mph cruise, its a pretty nice setup. It also has a nice rumble at idle.