1100 virago
 

I just bought a 86 yamaha virago 1100 that appears to have aftermarket intake and carb on it.It has a single carb ,I believe they came with two carbs .
Just looking for tune up tips for this setup.
Exhaust pipes are blue ,but the bike runs good with the exception of an occasional backfire if you snap the throttle.(Also aftermarket)
Any tips ???
Tim