Any one (or any combination) of the thoughts expressed above may be correct, but you (OP) shouldn't jump to any conclusion that you may have bought a lemon. There's a lot to be learned before you start panicking that you spent your hard earned money on a highly modified motor that might hand-grenade itself at any moment. We seemed to have jumped quickly from the only concern being the idle speed, to thoughts that it may be a monster motor build that's going to be nothing but problems, or that it's been through a fire, flood or other calamity.
I think the thought of trying to find out who the previous owner was, and what specific mods were done is the obvious first step. I'd start by checking with the service dept. to see if they had worked on the bike. The answers to most of the questions might be answered quickly as they'd have the service record details on file. If they didn't do the mods, then ask the sales dept. about getting the previous owner's info. They should be reluctant to give you his/her phone number, etc., but If that comes up empty, I'd start by calling (w/ VIN # in hand) the next closest dealer/s. If that fails, try independent shops near you, especially one that has a reputation for performance builds. If all that fails to deliver the info you need, send a private message to member - crazy4ink. He's a very knowledgeable tech that also lives in Texas and he should be able to look up the bike by VIN and should be able to point you in the right direction as to where the service work/mods was done - if they were done by an HD dealer.
The fact that it has S&S jugs on it most likely indicates that the previous owner had some serious mods done to it - maybe fairly moderate, or maybe extreme mods. Regardless of how this comes out, there's a lesson to be learned here that you need to really look a used bike over carefully before laying your hard earned money down. I personally would never buy a bike with replacement jugs, but there are others here who would, as long as you have service records that would layout exactly what's been done. Was the title clean ... or was it a salvage/rebuilt title?
No need to panic yet, but it's time you do some investigating to see just what it is that you bought. Start with the selling dealer and work your way out from there. Good luck with what ever you find out.
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