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Author Message   Jolly Posted on Sunday, July 21, 2013 - 10:34 pm:        I am getting around to getting the S2 tuned and ready to go while it sits in Tulsa before I go out and get it...my buddy that found it for me is going to do a few basics for me...Man I owe this guy!!! anyway, the only mods to the bike is the supertrapp exhaust, it currently has no discs and an open end cap so basically straight through.. I found discs and an end cap, was thinking about the open end cap from Al...any one with any thoughts before I try and reinvent the wheel here? also...what is stock jetting and what would you experts recommend in terms of number of discs and what jetting to match for a stock motor other than the exhaust?> thanks   Ratbuell Posted on Sunday, July 21, 2013 - 10:56 pm:        45/180 seems nice for a stock S2 engine with a 'trapp. Make sure you drill out the cap that covers the idle mixture screw so you can set it for 2.5 turns out. As I said when we talked...set the muffler for the SOUND you want. You'll have a lot of superslab to try the drone out on. You won't hurt anything on the way home - tune the SOUND. Once you figure out how you want it to sound (ah, the joys of a tuneable exhaust!), you can jet it to match. IIRC a stock pilot jet is 42. Step it up to 45. Set the screw (drill out the cap) for 2.5 turns out from lightly bottomed. Go with at least a 180 main...but for a long slab run with "unknown" exhaust (you're going to be tuning the noise) I'd go 185. If it pings...don't whack it on the way home. Just use the return trip as data collection You won't break it, you just won't have every last pony in the HP stable...   Jolly Posted on Monday, July 22, 2013 - 04:24 pm:        thanks Ratbuell, going to have it tuned by my buddy before I pick it up...he is a bike junkie like the rest of us and loves projects...he already has the carb apart sitting on a bench waiting for answers....I se a Buell in his future...but it is NOT this one!!!   Lynrd Posted on Tuesday, July 23, 2013 - 12:32 pm:        I wouldn't advise the open end cap - the whole value prop of the supertrapp is the tuning of the acoustic length of the pipe - more disks make it "Shorter" Mine worked really, really well with the same end cap you have. Really well - like, "scary, I had no idea a Sportster could wind up that fast" well. It was also drag raced for a while with that combination. Great tip from RatBuell.

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