re - tune?
#1
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#8
My understanding is that the adjustments are minor within a range. If you have a VE cell that is 97 at 2500 rpm and 20% throttle position the max adjustment is 10-15% of 97. For this discussion - the 97 is hardcoded into the cell and cannot be changed. Changes for the 10-15% happen in the adaptive fuel table which is the overall average of what is needed based on o2 feedback.
So for math purpose, lets use 15%. This will give you a variance of about 14.5 (97 plus/minus 14.5). If the cell needs 120 instead of 97 to be optimized it will never get there either in the original VE table OR the adaptive table. The adaptive table would have a max of 14.5 that gets added or subtracted.
So long story short - you may get away without doing a tune, but your bike will not necessarily flow through the RPM ranges and throttle positions smoothly. In addition the bike does not adjust well in areas that are being run in open loop which are basically the spaces where you twist the throttle.
So for math purpose, lets use 15%. This will give you a variance of about 14.5 (97 plus/minus 14.5). If the cell needs 120 instead of 97 to be optimized it will never get there either in the original VE table OR the adaptive table. The adaptive table would have a max of 14.5 that gets added or subtracted.
So long story short - you may get away without doing a tune, but your bike will not necessarily flow through the RPM ranges and throttle positions smoothly. In addition the bike does not adjust well in areas that are being run in open loop which are basically the spaces where you twist the throttle.
#9
So now my question: Would like to get a little more out of the bike, pretty happy with it the way it is. If I do the slip ons and the V&H naked breather conversion, add a Power Comander, will I feel the difference?
#10
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bigrobtemp
2014-2023 Touring Models
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08-09-2014 10:33 PM