2007 Fatboy ECM
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Stage II
Joined: May 2007
Posts: 2
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2007 Fatboy ECM
have a 2007 Fatboy with the SE stage II kit. But using the ECM programfrom the racecal list (S159MS002) results in a very lean condition and the bike runs very hot (I have the tuner and a computer to set the programs). I looked at the tables pertaining to the timing and found there is a great difference between the front and rear cyl. This did not make much sence to me. I also find that the closed loop with O2 sensors keeps this bike running hot. My local HD dealer does not have a dyno and there are none within 100 miles. Does anyone out there have a map that will work with this bike that will allow it to run cooler and still deliver acceptable street performance?
Road Warrior
Joined: Oct 2006
Posts: 1,830
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From: Retired and living in the mountains of NE PA
RE: 2007 Fatboy ECM
I can't help you with any info regarding a new map to use with your SERT, but I can relate to you that I went the other way and bought a Power Commander III USB which eliminates the O2 sensors and the problems associated with them. I have a SE Stage I intake and Samson Big Swoopies exhaust on the bike and am using the Power Commander map for this setup. The bike runs strong and doesn't running hot.
Regarding differences in programming between cylinders, the back cylinder map is normally much richer because it runs hotter. Being behind the front cylinder, it is out of the air stream. Its ignition timing may be different for the same reason. ???
Regarding differences in programming between cylinders, the back cylinder map is normally much richer because it runs hotter. Being behind the front cylinder, it is out of the air stream. Its ignition timing may be different for the same reason. ???
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Spanish Flyer
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Jul 9, 2008 12:47 PM
