Join Date: Jan 2011
Location: Central Florida
Harley hasn't used alpha n in their Delphi based ECM it's always been based off map kPa on the Delphi systems as least since 2002 that I have had. It's the power commander that is an alpha n device. Not sure what change your referring to or that happened in 2009/2010 as the maps still use kPa and rpm on the PV, SESPT, TTS, Direct Link as they have since the release of the SERT. They did go to lambda and narrow bands but that did not change the tuning.
MAP = kPa, so not sure what you are referring to. As can see as early as 4.77 of the SERT built by Steve Cole you will see they used kPa as the standard. Where PC has used throttle position and percent of throttle position depending on which version of the power commander you are talking about. They changed the visual in the PC5 along the way to change the nomenclature. I will also post up a screenshot of the TTS showing kPa.
He who laughs last thinks slowest.
Last edited by unbalanced; 03-22-2016 at 11:48 AM.