what main jet should i use for my stock 03 baja, i got a fmf titanium 4 14" silencer and the midpipe...i live in edmonton ab, so i dunno what elevation that would be or if that even matters...any input is great

 

Elevation and temperature are probably quite different in my neck of the woods but I run a 170 main(mikuni) with needle in the richest position on my stock DS with K&N & HMF. My normal riding is 400 to 1000 ft above sea level btw.