I just got my two brothers exhaust and I also have the Dragon fire fuel controller. The rzr runs great and pulls really well no popping or anything. I also have a K&N filter with the stock air canister. I was wondering if it is ok to run like this or should I make some adjustments. Also the fuel controller already came with its own adjustments and it seems to be running really well, just want some info on your guys set-ups.

RZR's run rich from the factory, so I wouldn't mess with it if it's running fine with no poping or backfiring.

Some one mentioned that all the fuel controlers were made by the same company??? Go to the Two Bros web site and download the instructions for the Juice box, see if your settings are the same. Their Juice Box come pre-programmed for their exhaust. Good choice going with Two Bros that is the cheapest 5 HP you will get for a Rzr. The fit, finish, quality and ease of installation are first class.

not all the controllers are the same but alot of them are re badged dobek controlers

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2006 silverado 2500 hd
2006 additude toy hauler
2008 polaris rzr
2006 suzuki ltr450
2005 kawisaki kfx700
2003 suzuki z400
2003 honda ex250