I just got a 98 Superhawk and noticed earlier today that the
exhaust coming out of the left (clutch side) can is a lot warmer than the right. It does not appear to be swallowing any coolant. Could it be one cylinder is running a leaner mixture than the other? And if so how much does carb work cost?

 

It's normal. It's a 2 into 1 into 2 so both cylinders exhaust through both cans. There's a tab in the left side pipe which restricts flow to that side's can.

 

This only happens during low exhaust flow situations. Once the revs build the flow equals out. This is easy to see on a cold morning. Push the bike outside and start it up, after a few seconds you'll see condensation coming out of one pipe. Rev it to about 2000rpm or so and you'll see the flow increase in the other pipe.

The idea here is that you don't care how equal the flow is between the two pipes at idle and low throttle openings, you care about WFO because that's when you need the flow.

 

thanks a lot