Auto Tune with EGO control filtered.

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Auto Tune with EGO control filtered.

Postby BlackBird_SR71 » Sat Jan 27, 2018 2:49 am

Trying to find a definitive answer on this and I'm coming up empty.

Doing some Remote Tuning on Turbo motors with Boost up to approx 170 KPA. Helping members get a baseline Tune so they can safely drive to work, Coffee cruise's, etc and to the Dyno Shop for final Power pulls and full Boost tuning.

1: Ego control is set with an upper limit of 90 KPA and throttle limit of 90%. I want fueling to go Open Loop above those parameters. I do not trust some Particular brands of WB O2 sensor at Loads above 100 KPA. I've read various articles that state they can give that they can give erratic readings.

2: Incorporate AFR Target = include AFR Table

Question. Will Auto Tune ( VEAL ) adjust Cell limits above 90 KPA, with EGO control filter as set? For some reason I believe that I had read that it could, but not as fast. Not too worried about that as VE Table has been set manually " Safe Rich " above 100 KPA.

Final full power Boost settings will be done on a Dyno, but Road Tuning with Auto Tune and VEAL will be used for the most part. ( And Data Logs of course )

In regards to O2 sensors giving erratic readings at WOT and under Boost. Is this just a old wives tale, or is there some truth to it? I don't mind using a NEW WB O2 sensor to calibrate the Boosted VE cell Values, as long as I can trust the darned things. And certain brands are just too unreliable for my comfort zone.

Once the engines are tuned Fully on a Dyno, then the Dyno operator can decide if he wants to leave WOT and greater than 90 KPA in Open Loop or Closed Loop. His call then. Last hand in the Cookie Jar.....
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Re: Auto Tune with EGO control filtered.

Postby LT401Vette » Sun Jan 28, 2018 12:23 pm

Autotune does not use the controllers EGO Authority limits. It has similar limits of it's own on the advanced settings tab. By default it will tune the entire table once the base filter criteria is met.
Phil Tobin
EFI Analytics, helping to simplify EFI
Next Generation tuning software.
Supporting all MegaSquirt versions and firmwares.
http://www.TunerStudio.com
http://www.efiAnalytics.com/MegaLogViewer/
Support the firmware running your engine:
http://www.msextra.com/doc/donations.html
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Re: Auto Tune with EGO control filtered.

Postby BlackBird_SR71 » Sun Jan 28, 2018 2:23 pm

LT401Vette wrote:Autotune does not use the controllers EGO Authority limits. It has similar limits of it's own on the advanced settings tab. By default it will tune the entire table once the base filter criteria is met.


Ok, that's what I thought. Good to know. So Auto Tune works more as a Long Term Fuel Correction and EGO Control works more as a Short Term Fuel correction?

Does Auto-Tune respond any faster better if the EGO control is left unfiltered? IE: EGO control left fully enabled to maximum throttle and maximum Boost.

I set my Auto Tune so that it covers the entire VE Table ( over 160F ) , except for the idle areas. I manually tune those, especially with high overlap camshafts.
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Re: Auto Tune with EGO control filtered.

Postby LT401Vette » Mon Jan 29, 2018 7:38 am

EGO Correction is not filtered, it is factored in.

It will work faster and more accurately if you leave EGO Correction on. Do not turn off EGO Correction for autotune.
Phil Tobin
EFI Analytics, helping to simplify EFI
Next Generation tuning software.
Supporting all MegaSquirt versions and firmwares.
http://www.TunerStudio.com
http://www.efiAnalytics.com/MegaLogViewer/
Support the firmware running your engine:
http://www.msextra.com/doc/donations.html
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Re: Auto Tune with EGO control filtered.

Postby BlackBird_SR71 » Mon Jan 29, 2018 7:11 pm

LT401Vette wrote:EGO Correction is not filtered, it is factored in.

It will work faster and more accurately if you leave EGO Correction on. Do not turn off EGO Correction for autotune.


That's the clarification I was looking for. Thanks Phil.
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