mebgardner
Active Member
I'm picking up a thread I started back in may: Re: 2014+ Stock ST Map (No Mods Map) for PCFC 22041.
Here: http://www.yamahasupertenere.com/index.php?topic=22184.msg314518#msg314518
Anyway, over the past couple months, I have been attempting to sort out a "compromise PCFC map that does mainly two things:
1) Provides a smooth (OK smoother than OEM) off-idle throttle response, and
2) provides a reasonable fuel efficiency at the settings that meet goal #1.
This proved to be difficult to achieve. PCFC Map Settings at "RPM .vs Throttle Percent" that would provide a buttery smooth off-idle throttle response, usually gave what I would characterize as horrible MPG mileage: Low 30's.
Backing off those setting to "lean out" the upper left quadrant of the map settings (ie: Low PRM and Low % throttle combinations), but not use setting of Zero (ie: 0 = No Assist from the PCFC, so you get OEM fuelling at that map setting). Leaning out those would give me better MPG mileage (Mid-40's to Low 50's), but I would be back to "square one" with the bucking bronc off-idle conditions.
I encounter dirt riding every time I leave the property, so this "snatchy" throttle acts as "whisky throttle" every time I go through my dirt wash. It annoys me.
What I come to understand about the PCFC, and likely about the PC-V as well (since it's a fuel controller, not fuel / air), is what I've known about engineering any electronic system over decades: Everything is a compromise.
With that thought, what is attached in my latest iteration of a compromise ECU map for a stock 2014+ ST / S10, no air box mods, no silencer mods. It should provide a smoother off-idle throttle than the super-lean mapping in a stock ECU, but also should not send your mileage into the crapper.
Enjoy.
(Note: The file type needs to be re-named from *.pvm to a .dvm, to pass the website attachment rules. A *.dvm file is suitable for loading via the PC software).
Here: http://www.yamahasupertenere.com/index.php?topic=22184.msg314518#msg314518
Anyway, over the past couple months, I have been attempting to sort out a "compromise PCFC map that does mainly two things:
1) Provides a smooth (OK smoother than OEM) off-idle throttle response, and
2) provides a reasonable fuel efficiency at the settings that meet goal #1.
This proved to be difficult to achieve. PCFC Map Settings at "RPM .vs Throttle Percent" that would provide a buttery smooth off-idle throttle response, usually gave what I would characterize as horrible MPG mileage: Low 30's.
Backing off those setting to "lean out" the upper left quadrant of the map settings (ie: Low PRM and Low % throttle combinations), but not use setting of Zero (ie: 0 = No Assist from the PCFC, so you get OEM fuelling at that map setting). Leaning out those would give me better MPG mileage (Mid-40's to Low 50's), but I would be back to "square one" with the bucking bronc off-idle conditions.
I encounter dirt riding every time I leave the property, so this "snatchy" throttle acts as "whisky throttle" every time I go through my dirt wash. It annoys me.
What I come to understand about the PCFC, and likely about the PC-V as well (since it's a fuel controller, not fuel / air), is what I've known about engineering any electronic system over decades: Everything is a compromise.
With that thought, what is attached in my latest iteration of a compromise ECU map for a stock 2014+ ST / S10, no air box mods, no silencer mods. It should provide a smoother off-idle throttle than the super-lean mapping in a stock ECU, but also should not send your mileage into the crapper.
Enjoy.
(Note: The file type needs to be re-named from *.pvm to a .dvm, to pass the website attachment rules. A *.dvm file is suitable for loading via the PC software).
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