I have a 2005 450r with a yoshimura TRC slip-on exhaust and a im ordering a EHS system intake. I was also wondering what size i need with the pilot and main jet. Your help would be greatly appreciated.

 

Good giude line from the 450.org

STOCK
------------
118 Main Jet
48 Pilot Jet
Air Screw 2 turns OUT
Needle on 3rd clip

STOCK PLUS HRC END CAP OR SLIP-ON WITH LID ON
------------------------------------------------------------------
120 Main
48 Pilot
Air screw 2-2.25 OUT
Stock Needle on 3rd clip

STOCK PLUS HRC END CAP AND VENTED BOX OR LID
------------------------------------------------------------------
150-165 Main
48 Pilot
Air Screw 2-2.25 OUT
Stock Needle on 3rd clip

STOCK PLUS HRC END CAP AND OPEN, HRC, EHS OR K&N LID
----------------------------------------------------------------------------
180-190 Main
48 Pilot
Air Screw 2-2.75 OUT
HRC, Sparks, or DynoJet Needle on 3rd or 4th clip (try both)

STOCK PLUS FULL HRC KIT (Honda Recommended)***
-----------------------------------
185 Main
48 Pilot
Air Screw 2-3 Turns OUT
HRC Needle on 3rd clip

STOCK PLUS SLIP-ON OR FULL PIPE AND OPEN, HRC, EHS OR K&N LID
-------------------------------------------------------------------------------------
180-195 Main
48 Pilot (If air screw final adj is under 3 turns out)
50 Pilot (If air screw final adj is over 3 turns out)
Air Screw 2-3 Turns OUT
HRC, Sparks, or DynoJet Needle on 3rd or 4th clip (try both)