wr450 first time mods.

Hi , first of all , i have a canadian WR450F 2004 , ive used it for 4 months , and now that season 2009 is about to start here's what mod i want to do , i just need some help for the jetting , ive read FAQ section but since i dont know the stock main jet and pilot size , i want to be sure to give the right info at my dealer , since the guy dont work with wr450 too often.

THE BIKE IS STOCK NOW :

here's the mod that will be done please help for pilot and main size please , i dont know anything in that.

Air snorkel remove

grey wire cut

YZ450 pipe to replace the stock one

throttle stop (yz size)

and the dealer says i should jet the main one and keep the pilot stock , i do 90% of trail riding near sea level in summer condition (25degree)

what should i buy or do ? just jet the stock main jet and keep pilot or buy a kit ?

please need some help

im no pro racer :p im just looking for the snap in throttle response and better 4th and 5th gear , and i want to do the right setup for the bike.

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