It's supposed to be 93dB with the sparky insert. A stock 660 ,with stock tip is 91, according to the proffessor Yank. So my guess is my stock system with a 2-inch tip, has to be 93 or 94. Looking at the build-quaility, it's awesome, and should provide the back-pressure I'm looking for without bottom-end loss.
Most 660 systems flow too much and are too loud, not what I'm looking for.
I've already tried a Trinity Stage IV complete system, it sucked, too loud,killed the bottom-end because it flowed too much. After much research, it's what I was looking for. And Moto..............of course it's for a 660............
