If you don't have it tuned right, you WILL notice a significant difference in performance. I have the Fi2000r and the factory settings seemed to be just right with the baffles out. It is considerably louder with them out but it has a very good smooth deep rumble(with the FI tuner) I just installed the S&S air cleaner so I have to start all over with the tuner and would like to know if anyone has found the right settings for this setup (cobra swepts, Fi2000r, and the S&S air cleaner.
Current setup is Cobra swepts; S&S air cleaner; Fi2000r - my (tentative!!) final settings are 4-3-0. Here's why:
The best performance based on how smooth the bike ran was when I had just the swept pipes and the fi2000 with factory settings which were 0-0-0. Not sure why they were set that way; different from the default settings as described in the instructions, but the bike ran great. I added the S&S air cleaner and in many small ways performance went to hell. (sluggish on acceleration thru all the gears, *especially* noticeable with moderate roll-on throttle in 4th and 5th gear); very coldstart, easy to stall, etc.
Tried every incremental increase of the first two pots up to around 6-5-0 with steady improvements, at which point (I think) I began to notice a return of slightly rough running; backed it down to 5-4-0 and had it set there when I took it in for 600 mile service (couple hundred miles overdue at that point)
The wrench who did the service said all was fine but the plugs were "slightly" blackened indicating mixture a tad on the rich side. I'd been deciding whether to back it down to 4-3-0; and after he told me that I went ahead and did it. Bike runs pretty good - ESPECIALLY got rid of that cold off-idle crap; pulls strong as hell off the line at stoplights/signs what have you. Gotta say though I still have the feeling that I never got it "quite" right - back to the point of overall smoothness that it was with just the pipes and the 0-0-0 setting.
Frankly, I got so tired of the endless cycle of ride/hop off/pop sidecover/tweek pot/remount - ride/hop off/pop side cover etc., etc., ad infinitum lol ... that untill/unless someone comes up with really well-tested (or dyno-tested) setting for the s&s/swept pipe/fi2000 combo that here's where it's gonna stay.
Actually, if it weren't such a big chunka $$, I would seriously consider scrapping the 2000 and go with PC5/autotune combo. There isn't a dyno tester within 70 miles of dayton ohio which will dyno a Fury (the two in Dayton proper won't put *anything* but a harley on their dyno; the one performance shop that will is booked till around next May. If the pc5/autotune works as advertised, granted you'd have to drill port for o2 sensor and it'd be a bit of a hassle but you could run any pipe/intake combo you wanted - least that's my understanding.
S&S stated awhile back they were gonna dyno the S&S aircleaner/cobra swept pipe combo with a PC5 and post a map, but when I talked to them last week the tech said yah we're gonna do that but it could be around 3 months or so lol - no use to me till next summer in that case.
Anyway, that got to be kinda long answer, but my setting is 4-3-0. If you find a better one, or whatever you find, PLEASE POST!!! Definitely want to hear from anyone pot-diddling the s&s/cobraswept/fi2000 combo.
Hope this helped; clear as mud I know
