I am running a 05, yfz450 with a white brothers E-2 full exhaust with air box lid off and pro flow filter.
175 main
42 pilot
needle out of a yz450 on needle clip position 4
1 1/2 turns out
elevation is between sea level and 500ft.
works great but a little bit of popping when I let off of the gas.
2004, Z400 curtis sparks header & pipe, jetted, K&N intake, A/C nerf bars, A/C bumper, hand guards
2005 YFZ450, white bros E-2 pipe, K&N intake, ESR CDI box, exhaust cam gear reset, A/C pro peg nerf bars, hand guards.