Ninja 1000sx exhaust install

quite entertaining your video ? you will notice significant popping and sputtering mostly under deceleration and light throttle. i have a Versys 1000, same engine as the Ninja. i cut out the cat and installed a similar muffler. it was just horrible. Did some research and found the solution. I disabled the PAIR system and all is good now. There is a hose coming down from the right bottom of the air filter box. Pull it off, shove something in and put it back on, done. Hope this helps. Greetings from Canada.