Super E verses stock Mikuni carb
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Joined: Dec 2005
Posts: 19,922
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From: poway
The improvement depends 100% on the skill and knowledge of the tuner- to tune the carb to the potential of the motor.
BOTH the Mikuni and the S&S will need adjustment if you change elevation much.
The stock Keihin CV carb would not, it is self adjusting for air density changes whether altitude or temperature.
Again it depends on the skill of the tuner.
Nightrider.com biketech section has info on modding and tuning the CV carb.
My 80" 1995 FLHTC with CV got 45 MPG at 65 MPH and sailed through emissions.
It also left way behind my Pal's 103/103 twin cam road king with Mikuni once we changed elevation- he was tuned for 1400' Phoenix...much of Northern AZ is 5000' +, Flagstaff is at 7000'
mike
BOTH the Mikuni and the S&S will need adjustment if you change elevation much.
The stock Keihin CV carb would not, it is self adjusting for air density changes whether altitude or temperature.
Again it depends on the skill of the tuner.
Nightrider.com biketech section has info on modding and tuning the CV carb.
My 80" 1995 FLHTC with CV got 45 MPG at 65 MPH and sailed through emissions.
It also left way behind my Pal's 103/103 twin cam road king with Mikuni once we changed elevation- he was tuned for 1400' Phoenix...much of Northern AZ is 5000' +, Flagstaff is at 7000'
mike
Outstanding HDF Member
Joined: Mar 2008
Posts: 2,306
Likes: 39
From: Everywhere
My stage 2 1999 tc88 w/ 42mm Mikuni went coast to coast twice, totaling 48 states from sea level to 12,000 feet - never hiccuped, stumbled or burped.
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