Re: CBR900RRT Jetting
I currently am running 120s across the board. Needle 5th clip and adjusted idle air screws
Open header bmc race filter ported head
In your situation I'd stick with oem filter. I'm goin back to it soon. Makes more power than k&n.
The reason for honda doing larger jetting on the inside is for the increased heat from outer cylinders so they richen the two inner ones to compensate for heat.
Leave your jetting alone if stock muffler and header.
Rubber side down, One wheel to the sky for those who we won't forget. R.I.P homies miss you.