Question about 2003 Yamaha V Star Classic
You can try driving the bike after the install. After you change the exhaust it will run lean. You may want to coat the inside of the mufflers with an anti blu-ing agent or your headers will discolor. If when test driving you notice the bike has developed a flat spot in the acceleration curve you will want to re-jet the carburetors. The easiest way is to buy a jet kit from Cobra, Dyna-jet,etc.($80-$100). Other wise you can just buy several sets of larger jets and change them out till you are happy with the way it runs. Most people that change the mufflers and put in a jet kit, also install a K&N air filter .
More air flow + fuel flow = more exhaust flow (more power)
Posted on Sep 09, 2010
The Simple Answer is NO. You do not HAVE to rejet but you can if you wish.
Posted on Oct 14, 2010
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
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Posted on Jan 02, 2017
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