im going to put a muffler after my y-pipe and i want something quieter than a bullet. i was thinking about the moroso spiral flow or maybe a magnaflow xl3 but i have no experience with either.

also the xl3 is 7" o.d. so im not sure about fittment.

any opinions?

 

i used them for a little while. they have the same sound as open headers....just much quieter. If you plan on running a single spiralflow you can expect it to be a little louder than something like a hooker catback. well, more than a little louder, but not deafening.