tsargent4
01-04-2009, 04:49 PM
I have an 06 yfz450, stock carb, and a FULL BUB Moto C-4 exhaust, the air box lid is off and I have a 170 main, 42 pilot, needle is stock and on 3rd clip from top as it came stock, and the A/F screw is 2 1/2 turns out.
Once the motor is at running temp. "IDLING" and the choke is off, if the throttle is blipped, it acts as if it chokes or cuts out, when riding its fine in 1st and 2nd gear, but once it gets to 3rd is kinda spits and sputters unless you punch the throttle and its fine.
Any suggestions? I know many people haven't even heard of BUB exhausts, or don't even run them, but if anyone knows what I can try it'd be appreciated.
Location: Bedford, IN (not sure of "sea level footage")
Once the motor is at running temp. "IDLING" and the choke is off, if the throttle is blipped, it acts as if it chokes or cuts out, when riding its fine in 1st and 2nd gear, but once it gets to 3rd is kinda spits and sputters unless you punch the throttle and its fine.
Any suggestions? I know many people haven't even heard of BUB exhausts, or don't even run them, but if anyone knows what I can try it'd be appreciated.
Location: Bedford, IN (not sure of "sea level footage")