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[GMR-PERFORMANCE]

A bike at sea level or approx say 1500 is still fine but at higher elevation the timing tables for WOT are say 90 or 85 vs 100 KPA but again that is all in the tune . Having tuned hundreds and hundreds of bikes at 5500 feet and having the customer go right down to 1500 in PHX you figure out very fast how to correctly tune it to run in both areas.

The bike can alter AFR but it does not have a baro sensor so the timing will never adjust ,  it will adjust the closed loop afr with in its range   as the tune gets richer as you climb or leaner as you drop . But again the bike has no idea what elevation you are at. No way for it to alter KPA too bad really . I feel that will be something we see in the future though . Only makes sense, yes it can re adjust but it has to be turned off and then back on so .. if you are riding,.. it's stuck at what ever it read to start with . so what good does that do when you have to only ride for 45 minutes to go from 1500 feet to 6500 feet Hence it will not adjust until it gets the chance to be turned off and get a new reading. SO is it really making a live adjustment not so much, KPA wise now closed loop AFR yes it will do that . But even with adjustment of KPA it still does not counter the timing curve.  If the timing table is set at 38 degrees of timing at 80 KPA and now you go WOT at 6000 feet it will read the 80 KPA , it has no way to know that it should be adding the 20 KPA back into the figure due to a massive change in pressure  .   Where as the MM system had a baro and it was live , the rest of the system sucked though HA HA   

Updated

[HD Street Performance]

Delphi disagrees,
http://www.prnewswire.com/news-releases/delphi-keeps-harley-davidson-at-the-peak-in-setting-standards-for-motorcycle-technologies-72548317.html
They list the barometer feature. If that works like the MM did then key needs to be turned on and off before the moto recognizes a new elevation.

[Twolanerider]

Delphi disagrees,
http://www.prnewswire.com/news-releases/delphi-keeps-harley-davidson-at-the-peak-in-setting-standards-for-motorcycle-technologies-72548317.html
They list the barometer feature. If that works like the MM did then key needs to be turned on and off before the moto recognizes a new elevation.

Link is to an article that's a little over 16 years old...

[HD Street Performance]

Yes but does that make it inaccurate?
It is direct from the manufacturer.  I am here to learn, I am far from a tuning expert.

[GMR-PERFORMANCE]

Data logs prove that the bike at High regions will never see the 100 KPA and it does not alter the timing to make it work in the correct range. It will slightly alter AFR in some back table but nothing that we as tuners can control.. Hence timing table from 80 to 100 in a performance build would all be the same .  Then add in the lack of humidity in many of the 5000+ areas you can end up with a hotter running bike even with the loss of 20 PSI per cylinder on avg..  10 PSI for every 2500 ft . 

Other wise the chance of detention it extremely high as it will hit the 85 kpa lets say and that timing under normal table would be higher than 100 .

Again all back to the tuner making the proper changes to allow the bike to run anywhere and on say 87 E10 pump gas.. Its not that hard,.. why so many tuners do not do it is any one guess.

[HD Street Performance]

I understand that but how can you correct cells in either VE tables or timing tables that are not obtainable. You cite 5500ft what about 9000ft? Now bar is so low you are peaking at what would be cruise range map at sea level.