Lower than 14,7 is not really good for anything except polution. It will heat up your engine and aircooled engines will have trouble... In liquid cooled engines lower than 14,7 works just fine - as they have no problem transporting the extra heat away - They do however not produce the maximum no of horsepower - but they polute less
Hello Killerbob, I think you got this one backwards my friend.......
While 14:7 is stioch.........................and is required at steady throttle for good fuel economy.....................the ECU needs to be set up at 14.1 max on all maps to achieve the cooling effect required......................on air cooled motors.
Lowering the A/F to achieve 13.5/7 overall achieves excellent power increases but will effect economy..............
All of the aftermarket EFI Units that piggy back to the ECU trick the injector pulse widths to increase fuel which lowers the A/F, cools the motor, and gets the bike running like it should.
For all the new guys (including me) that have or are going to get the Super Sert...........you need to find a map that is close to the year of your bike and the one that suits the mods you have or will do and load it to your bike........................
Currently my March Build 2008 Fatboy that has the V&H Big Radius 2:1 and V&H A/c has only 2 maps available that I can and have tried.......(numbers not present on this computer) (176PZ and 205TC I think) These maps are for 2007/8 Engine, with SE A/c and slip ons for 1580cc engine.
So if you have changed A/C and pipes then simply find the year in the SERT MAP Index, look at the column that shows the screamin eagle modes, check the engine size (2008 = 1580cc) and load that map into your Super Sert.
Once you can view the A/F Tables then do the following..........and this does apply to ALL Super SERT maps (if you follow my logic)
Adjust all 14.6 cells in the A/F table to 14.1 (this will lower engine heat considerably............experimentation might need additional lowering in some cells and this is where you need to remember your throttle position and what you are experiencing when you ride the bike and notice the changes.) (Much trial and error)
Adjust all column 1 and column 2 cells in the 750rpm to 2000rpm cells to 13.2 (this will lower decel popping quite a bit)
Your bike should start nicely, idle correctly, and drive really well and run mucher cooler than stock.
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Against popular opinion.................the times when you will destroy a motor with the map you adjust and download into the bike.............is when you go above 14.7 A/F Ratio and increase timing..........this gets you into super lean conditions which can and does increase cylinder temperatures to the point of melting your pistons.........then you grenade your motor.
Most times all you have done is added fuel and your economy turns to sh!t, so stop worrying about stuffing your motor with the sert............
Once you get used to playing with it and you read more about EFI and apply that logic to your tuning ideas the SERT will get easier and easier to use..........................
Or you can go to your local tuner like Doc in Florida, spend an afternoon with an absolute legend in the motorcycle industry and get him to set your bike up......................
Me........well I have the dreaded curious mind syndrome and just love to play and experiment..................
Hope this eases the pain some of you are having with the SERT.
All the best, Ozzie
