Grizzly Dyno/Tuning 700 2013 slip on/ need fuel proframmer? April 10, 2015 My freind has a 2013 grizz 700 and want to put a slip on exhaust on it, will he need an fuel controller/ optimiser or just bolt on the exhaust will be fine??? Will it run to lean? Will it be the same with my 2014 grizz 700? Thanks every one Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related