Transmatic
03-17-2014, 10:50 PM
My 2007 400ex was stock. I'm in the process of installing these mods while nursing a knee injury.
Modified air box lid and snorkel
K&n air filter with outerwares
White bros e series exhaust
I just realized the stock header pipe doesn't fit together flush with the white bros exhaust. I already have the carb pulled to install a 42 pilot and 155 main jet. Rather than fooling with fitting the stock header pipe to the exhaust I'd rather go ahead and purchase an aftermarket header pipe. I'd rather not spend $250+ but if that's what it takes to get the best bang for my buck then so be it. I mainly ride trails, private dirt roads, clay pits and some MX style but not much.
Looking for suggestions on best header pipe with above mentioned mods. Should I go to 165 main jet? I ride at about 700-1000ft above sea lvl.
Modified air box lid and snorkel
K&n air filter with outerwares
White bros e series exhaust
I just realized the stock header pipe doesn't fit together flush with the white bros exhaust. I already have the carb pulled to install a 42 pilot and 155 main jet. Rather than fooling with fitting the stock header pipe to the exhaust I'd rather go ahead and purchase an aftermarket header pipe. I'd rather not spend $250+ but if that's what it takes to get the best bang for my buck then so be it. I mainly ride trails, private dirt roads, clay pits and some MX style but not much.
Looking for suggestions on best header pipe with above mentioned mods. Should I go to 165 main jet? I ride at about 700-1000ft above sea lvl.