Hey guys name is Joey, I just installed the 450r carb on my 2013 400x all stock but have a lonestar slip on exhaust from Motor Experts..anyways carb came with a 180 main and a 50 pilot started like perfectly turned the idle down and Rev fine was late so didn’t Rev it up to much or loud anyways I know someone on her has this jetting for these figured out i live in Illinois so I’m 5000 above sea level I think so any pointers on what jets to run would be great gonna run it on Sunday going to my buddies sprint car race tomorrow so can’t ride it tomorrow think the air mix screw is 2.5 turns out….oh and my air box has holes drilled in it and my stock carb was Jetted with dyno jets 170 for main and stock 38 anyways any input would be great going to install my GT thunder rear link now lol Thanks

Hey guys name is Joey, I just installed the 450r carb on my 2013 400x all stock but have a lonestar slip on exhaust from Motor Experts..anyways carb came with a 180 main and a 50 pilot started like perfectly turned the idle down and Rev fine was late so didn’t Rev it up to much or loud anyways I know someone on her has this jetting for these figured out i live in Illinois so I’m 5000 above sea level I think so any pointers on what jets to run would be great gonna run it on Sunday going to my buddies sprint car race tomorrow so can’t ride it tomorrow think the air mix screw is 2.5 turns out….oh and my air box has holes drilled in it and my stock carb was Jetted with dyno jets 170 for main and stock 38 anyways any input would be great going to install my GT thunder rear link now lol Thanks