Open airbox jetting

[kargaaro]

I'm already all set up but I may have to put my stock pipe back on for 1 race if I cannot pass sound tests. Just want to be prepared for worst case senario. Is anybody running stock pipe with open air box?? THX.

[RedRacer44]

In the 1st stages of building my buddies 450Rs, we took the exhaust baffle/core out, took the airbox lid off, and put in a 185 main jet. It ran great.....jetting will depend on your location but 180-190 main with the baffle/core out of the stock exhaust should work.

Im not sure on the jetting if you leave the baffle/core in the silencer

yea it works