what to do

[IOWAracer]

my pipe is glowing red so i am sure its lean but im back firing real bad what could it be? anyone have a clue?

[b2sandshee]

your lean, the pipe is still gonna glow but it shouldnt be to bad if it is jetted right. go up a couple sizes on the main.

[parkers30]

did you replace the exhaust crush gasket when you put on the new exhaust? some of that back firing may be caused by a leak there

[IOWAracer]

i went to a 170 main and itwas a 162 made it worse with the glowing what do u mean by the crush gasket?