Posted October 22, 2007 - 10:35 PM
Posted October 23, 2007 - 04:04 AM
Posted October 23, 2007 - 08:36 AM
The YZ was very loud and the new Q2 is much quieter I love the new muffler.
The power difference is less than I thought. I notice a difference at full throttle high RPM. The low end power is great so close I can't tell if it is the same or better with the Q2.
Posted October 23, 2007 - 08:58 AM
I took the same system off my 02 WR for the same reason and put the stock unit back on. Without an insert it's a little loud but not too bad. The stock insert was too restrictive so I bought this one and it's right were I like it.
I just bought a '99 yz400. It has a white bros e-series full system that is LOUD. I'd like to know which of the 98-02 mufflers is the quietest, stock or aftermarket? Is there a difference from a stock WR and YZ mufler? I'd imagine there is, but i've never seen them side by side. I just want the lowest DB possible cause it's gonna be my city bike. Thanks
Posted October 23, 2007 - 08:59 AM
Posted October 23, 2007 - 03:54 PM
Posted October 24, 2007 - 08:04 PM
I heard that the q4 is quieter and gives more power than if you use a powercore w/ quiet core insert. Obviously, this means nothing to us guys that have 02 and older bikes.
Well I heard that the TI powercore with quiet insert shows no discernable difference from an open TI powercore. A TI powercore flows significantly better than a Q4