k&n filters on 03 rx1

[stomper]

If I replace the stock air box on my 03 rx1 with four k&n filters will I have to change the jets and if so to what size.

 

[Fullback]

Yes you will.
Most have gone to 165 to 170.

 

[Yamaharida14]

Yeah I jetted mine 22 pilot jet 165 main jet. Works great didn't really notice much of a difference at the gas pump either.

 

[Fourcam281]

Checkout the airbox mod instead of wasting money on the filters.

 

[Almost700]

Checkout the airbox mod instead of wasting money on the filters.

I second that. I was going to do filters too but after reading I read of equal performance gains with less hassle(and less money) by doing the air box mod. I did mine. I am at 165 mains, 20 pilots, neddle dropped one clip from middle, 2.125 turns out on fuel screw, and holtzman red springs, and its real close. Going to turn fuel screw out another 1/8th-1/4 turn and go with 170 mains and should be good. rpms picked up 400 with this mod over stock so it appears to be making power.