Join Date: Nov 2014
Thanked 129 Times in 128 Posts
ATV: 2008700SD and 2002 400 FIS
You certainly need the o-ring. Also you may want to put on a catch can to collect some of the crank case oil fog and let it run back into the motor. Might want to install a boost gauge and yes, gut that constipated muffler out! Couldn't believe how much stuff was in mine. Also, the exhaust will sound really cool, deep. Lastly carefully screw the locked torque screw in as far as you dare. I gooped a little blue Locktite on mine for insurance. My 2008 motor has a tag saying that max rpm is 4300, but (4x4hans) said his 2015 had a 3800 or maybe 3600 rpm speed limiter. So it may be possible to get more top speed with the governor spring for a 2008 model. Anyway, once you max out the fuel, you should see quite a difference! When 4x4hans visited me this summer we took both of my Cats on a 200 mile ride. Cruised between 35 and 50 mph. Hans' daughter drove the last 44 miles with Hans in the back seat between 45 and 50 mph, so I guess they like to run! You should see a nice puff of black smoke, if you nail it from a stop and after gutting out the muffler a really cool whistle from the turbo.
2014 700TRV XT EPS, 2008 700SD Intercooled Turbo