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[HEADPAN62]

just got back from a cross country trip with many questions. to start I have a 2001 fltrsei2 with a intake kit ,true duels with python slip ons and a powercommander with stock map.For the trip I put the stock mufflers on the true duel headers to quiet it up and scince I resricted the flow I reinstalled the origonal air cleaner.So the bike had the powercommander,true duels into stock mufflers and stock intake.  (1) In high altatude she would not idle worth a chit and had no power.  (2)  The motor reallymade alot of noise around 73 to 78 mph(Tapping really loud)wich I was told is normal from many twin cam owners.  (3) I know the screamin eagles have diffrent gearings in the primary but my average speed was 80 taching out at 3700 rpm's and my mpg at that speed was about 27 mpg.Any input on this subject would be apreciated. I have been running a pan and an evo for 18 years so twin cam and efi are not my specialty,   Headpan62     (6200 miles in 16 days)

[HUBBARD]

Yeah, 'er 'uh, HEADPAN62,
 Shovelhead71 could give you the details much better than me.  Are you sure it has Stock Map? [smiley=nixweiss.gif]  You reduced the air coming in, and goin' out, with your MODS for the trip.  Can't relate at all to that tapping noise.  If it is there, my RINEHART'S kill it!  However, I do hear CHIT [smiley=oops.gif]I mean CHIP, tapping his fingers on the table, thinking, "How am I gonna' outrun Tater?" [smiley=huepfenlol2.gif]  Your Engine Sprocket has 24 teeth, mine has 25.  Your Clutch Hub Sprocket has 37 teeth, mine has 36.  In Fifth gear, at the same speed, assuming we both have 16" rear tires, your Engine will be cranking 200 RPM's more than mine.  27MPG?  Somethin' is definitely wrong, there.  The answer will come. [smiley=thumbsup.gif]  This is a Great Site man, and I'm glad you're a member.  Later--HUBBARD

[HEADPAN62]

Thanks for the replys.I knew I would have a power loss with the stock intake and exaust  reinstalled but is was very noticeable in HIGH altitude along with having no idle at 12'000 ft. which I thought EFI would adjust as needed and it did not.I'd rather have a good old s&s shorty.Has anybody converted EFI back to a carb.It is the stock powercommender2. I get alot of (POP) when deexelerating so I leaned low & mid range out a bit and that went away for the most part.Runs great here in Jersey.Real fast and quick.(Bring it on Hubbard!!)   Any more input on the 27 mpg running at 80?

[spydglide]

Yeah, somethings bad wrong to be getting 27mpg cruising at 80mph.  Mine usually drops some at interstate speeds (75-80) but still get in mid to high 30's.  When I get on back roads and fall back to 60-65mph the mileage goes back to low to mid 40's.  Just talked with a guy who has a 103 built for the dragstrip and he's getting 50mpg!  Now that's efficiency!   Har!   [smiley=laugh.gif]   spyder

[HEADPAN62]

also why do these specific model hd's (fltrsei2) have the different gearings in the primary.It seems this is the only model like this and the service supplement manual does not back it up.I called H d in wisconsin and they said it is not factory to have the diffrent teeth on the clutch and compensating sprocet.     all big twins run  25(compensator) and 36(clutch), the screamin eagle road glide has 24(compensator) and 37(clutch)   WHY!!!!! [smiley=thumbsdown.gif] [smiley=thumbsdown.gif]

[Ed Ramberger - One_Screamin_Eagle]

Comparing Delphi here is apples and oranges.  The Marelli ECM simply can't compensate as well as Delphi, and add into the mix that for what your bike is running, you NEED a USB powercommander with front and rear fuel maps written.  

With the gearing you have, and the altitude you were at - given it'smost likely not mapped properly and running at 3700 rpm, yep - 27 mighjt be it.  

Been there, mapped it, converted it to Delphi.

[HEADPAN62]

Thanks onescreamin eagle. What was the cost of the conversion and how hard was it. Did you need a wiring harness?

[grc]

just got back from a cross country trip with many questions. to start I have a 2001 fltrsei2 with a intake kit ,true duels with python slip ons and a powercommander with stock map.For the trip I put the stock mufflers on the true duel headers to quiet it up and scince I resricted the flow I reinstalled the origonal air cleaner.So the bike had the powercommander,true duels into stock mufflers and stock intake.  (1) In high altatude she would not idle worth a chit and had no power.  (2)  The motor reallymade alot of noise around 73 to 78 mph(Tapping really loud)wich I was told is normal from many twin cam owners.  (3) I know the screamin eagles have diffrent gearings in the primary but my average speed was 80 taching out at 3700 rpm's and my mpg at that speed was about 27 mpg.Any input on this subject would be apreciated. I have been running a pan and an evo for 18 years so twin cam and efi are not my specialty,   Headpan62     (6200 miles in 16 days)

When you put the restrictive air cleaner and pipes back on the bike and didn't change the map, it caused the bike to run rich.  At high altitude the thinner air causes the mixture to be even richer.  This would account for the mileage and the poor running.