Got my Two Brothers from UPS today. I was really impressed with the quality and construction of the two brothers M7 I put on my grizzly 700 I decided to try it out on the 700XX along with their Preprogrammed Juice box, Where on my Grizzly I run a PC3. with the tip and spark arrestor it has a nice deep tone and is not stupid loud prob around 95DB max.All I can say is wow . It made a Huge Difference in power! I slapped on the exhaust installed the P1 tip and made a few mods to run it along with the spark arrestor. For now until my bracket is made I sort of zip tied the Juice Box in place and went for a few rides. The quad pulls MUCH stronger on the bottom, mid and decent on top, really noticed the difference in response and just stupid bottom end 2nd and 3rd gear gains. This definitely shows the 700XX is corked up. Next up is opening up the air box, and dialing in the Air fuel ratio with my wide band.