I'm going to check out a '09 Xb12r Firebolt this afternoon and have a few questions. Hopefully, you riders can help. First off the previous owner replaced the stock muffler with a straight pipe. My thought is it has to be leaned out to the max; do you think there's any engine damage with 5K? Secondly, does this engine come with the cable from the airbox to the stock muffler. Reason I ask, he says the check engine light is on and H/D told him if he put a muffler on it the light would go away. Maybe they meant a stock muffler with all the attachments. I have a complete stock exhaust system from a '09 Uly; are they the same? Sorry for all the questions, but local help is fairly non-existent.