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Dirt Bike Brands - Other
simple 400SX mods?
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[QUOTE="Coach in ND, post: 146510, member: 22352"] Bud-man, I'm at about 900' above sea level. I have tested alot of different jetting specs. I messed around alot with needle position and main jets. You can go all the way down to a 162 on the main. It will really help the overrev but take away from the grunt on the bottom. Great for faster, loamy motocross tracks. The richer the main, the better the bottom end grunt, but at the cost of the overrev on the top. I run a 168 for off-road type events and a 165 or 162 for motocross. You are correct. I placed it under the tank but placing it in the airbox would be a better idea. I must have had alot on my mind when I typed that post!!!:confused: [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
simple 400SX mods?
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