SLP single pipe and can is the best BANG for the buck,twins make more power up top but lose a bit of torque on the bottom end and take a more experience tuner to get everything out of them, DG = DUMB & GOOFY, the only aftermarket silencer I have ever run with the stock pipe is a SLP, same sound level as the stock can but a nicer tone,as for all the other racket makers out there you can just throw them in the trash.
Here is the sound for my idling xc700 with an MBRP race can and stock pipe. Its loud when you wrench on the throttle but idling through towns and at low speeds its not too bad, but definately louder than stock.
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