1998 Kawasaki Vulcan 1500 carb tuning

SOURCE: 1999 VN 1500 Classic Air/Fuel Ratio

Yes,but it will only make it run bad by either being too rich or too lean,It will not increase power or MPG's and will be damaging to the internals.

So what are you trying to achieve? Better mileage? More power? quicker response? What?

SOURCE: Which size Jet Kit for 800 Vulcan Classic?

general rule of thumb is to go up about 10 jet sizes,unfortunately it is a bit of trial and error,and you may have to swap out diferrent sizes to get the bike running right,(jets are quite cheap though)but first step about 10 sizes from standard,your local dealer should be able to tell you what jets are in it and supply replacements,if you change to a hgh flow aftermarket air filter you may have to change jet sizes again as changing the filter may effect the mixture ratio in the carbs,,hope this helps

SOURCE: pops through exhaust when throttle is shut down

check vacuum pipes are not leaking. if you have removed airbox for K&N cone filters then vacuum tubes need to be sealed.

SOURCE: I have a 1998 Kawasaki 1500 Vulcan Classic. Which

you need to change the big main jet. the stock size will be stamped on the jet. Go for one or two sizes bigger. Your motorcycle shop dealer will help you out when you buy the jets.

SOURCE: I have a 93 vulcan 1500 that backfires thru the

You have stock exhaust? If not, that's your cause.