My bike (06 America) runs great, pulls hard, starts easy. The only issue it has is backfireing on deceleration.AI is removed, air intake is all stock, and I have the short turn down pipes from JCW. The PO told me that when she got it (I am the 3rd owner) it had open pipes on it and she did not like the noise so she put stock mufflers back on it. So I don't know if the jetting is stock or not. I do know that with the stock mufflers it did not run as good as now with the open pipes. It did not start as easy, and it would backfire through the carbs once in a while. Didn't have as much power either.
I pulled the plugs, they have some residue on them, but over all they just look real clean.
If backfires are all I have to worry about then it's all good, but if it could still burn up even tho it's running great...................
