jbuddenberg
03-30-2015, 12:33 PM
Just upgraded my 2009 400X with K&N Air Filter, Powerlid, and HMF slip on exhaust. I rejetted Main Jet to 170 and Pilot to 42. After warming it up for 10 minutes I give it full throttle (still on jack stands) and it boggs out. Did I get too aggressive on the 170 Main Jet? I'm going to get the wheels on it and give it a go but wanted to get some feedback on the jetting.
Thanks!
Jimmy
PS. The exhaust does sound BEAST. Can't wait to run it.
Thanks!
Jimmy
PS. The exhaust does sound BEAST. Can't wait to run it.