6L90E Help

[GHuggins]

You need to keep a couple of things in mind too - such as your tune was scaled the "old way" - used airflow tables instead of the double stoic method... Unless you've completely retuned it - your going to want to almost double the values to begin with... I always try to shoot for over what the transmission will ever see - especially if it's a near stock trans - this will really help with shifts... I've seen "dialed into actual" torque models keep tranny's from making the shift in time no matter how much editing was done to the trans side... Try to target 900 to 1000 in the torque output at least...

These transmissions have to be run hard to learn in - don't be afraid to go at least 3/4 throttle when doing the initial shifting learn - this is even per GM after doing the initial relearn on the scanner...

[dwright122]

You need to keep a couple of things in mind too - such as your tune was scaled the "old way" - used airflow tables instead of the double stoic method... Unless you've completely retuned it - your going to want to almost double the values to begin with... I always try to shoot for over what the transmission will ever see - especially if it's a near stock trans - this will really help with shifts... I've seen "dialed into actual" torque models keep tranny's from making the shift in time no matter how much editing was done to the trans side... Try to target 900 to 1000 in the torque output at least...

These transmissions have to be run hard to learn in - don't be afraid to go at least 3/4 throttle when doing the initial shifting learn - this is even per GM after doing the initial relearn on the scanner...

I haven?t changed the tune. I reached out to the tuning school for more info on the VT tables and below is a link of the video they made for me. The gentlemen reviewing the tune tonight but says the actual torque and calculated torque is matching at the shift points and isn?t seeing anything

https://share.vidyard.com/watch/R631BbFwqhPp2Fz5G1ytKc

[dwright122]

I just don?t have faith in taking it just to another tuner as I don?t have any faith that the next tuner can get it correct.

[GHuggins]

Tell your next tuner to use the double stoic setup and dial the air models in correctly and then even if the torque model isn't right, you'll just need to add a little to it to get it right... The tune scaled the way it was is your whole issue to begin with

[dwright122]

Tell your next tuner to use the double stoic setup and dial the air models in correctly and then even if the torque model isn't right, you'll just need to add a little to it to get it right... The tune scaled the way it was is your whole issue to begin with

I have a new tune written with the double stoich method. I believe the injector data should plugged in at 58.6 psi across the board. Everything else is set. Then get the MAF dialed in on the dyno.

[GHuggins]

If you have a boost referenced regulator then yes - also set your offset vs pressure vs ignition voltage the same across the board if this is the case... You'll need to dial in your MAF and VE again for this as well...

To clarify - half IFR, double stoic, half IVT terms - ones with actual numbers - not the 1's table, x.6 instrument cluster - the initial basic settings for this...

[dwright122]

If you have a boost referenced regulator then yes - also set your offset vs pressure vs ignition voltage the same across the board if this is the case... You'll need to dial in your MAF and VE again for this as well...

To clarify - half IFR, double stoic, half IVT terms - ones with actual numbers - not the 1's table, x.6 instrument cluster - the initial basic settings for this...

I will finish it up tonight seeing how I am not working and get in the dyno this week. I already checked the new tune on the car and it starts and idles good but my wide band has been going offline so I need to get that working as well

[dwright122]

New tune is done. Got the wide band fixed. Car idles good and is right at 1.0 lamba. Now I need to add some formulas to the scanner to correct comanded fuel. I am going to try to get it tuned for part throttle today and wot when I get to the dyno. Looks like the MAF was scaled by around 15% or so

[GHuggins]

This is Jslic's formula, but it corrects for everything as long as your logging everything you need to... You have to log a wideband, ethanol percent, eq ratio commanded but I think that was it... Or just log lambda error - it's all the same - this one just logs afr error... Make sure your logging your channels wideband in air fuel too...

100*(([50120]*((1-(([82.156]/2.45)/100))*14.68)) - ([50118.238]*((1-(([82.156]/2.45)/100))*14.68))) / ([50118.238]*((1-(([82.156]/2.45)/100))*14.68))

[realcanuk]

I haven?t changed the tune. I reached out to the tuning school for more info on the VT tables and below is a link of the video they made for me. The gentlemen reviewing the tune tonight but says the actual torque and calculated torque is matching at the shift points and isn?t seeing anything

https://share.vidyard.com/watch/R631BbFwqhPp2Fz5G1ytKc

What the guy is saying makes sense I think. I took the torque numbers form a dyno sheet, and that should work too.

I agree with Huggins..... scaling the tune would throw everything off, while the double stoich method works perfectly and keeps things in line.

Looks like you are on the right track....

[dwright122]

Okay, I got my tuner back since upgrading to the pro version, I have the car tuned for part throttle but am having little trouble how to set up the camanded afr as I am using double the stoich method and ARF error, I am trying to tune in lamba, I put the above formula in but not sure if I have it correct. below is a log file showing my layout. any help would be appreciated

part throttle.hpl

[dwright122]

I think I am close, after trying a few more things attached is my WOT log, II believe the AR error needs to be x.5 due to the x2 stoich method. question is can I just plug it into excel. x the values by .5 and them multiply by % into me MAFvs Freq. the Commanded and what the AEM wideband are reading do match almost exact but seems to be a little rich

[realcanuk]

Using lambda you should have to do that.

[dwright122]

Using lambda you should have to do that.

I didn?t think so either but for some reason there is nothing showing in the lamba eq graph. It?s not showing any difference in percentages

[realcanuk]

I didn?t think so either but for some reason there is nothing showing in the lamba eq graph. It?s not showing any difference in percentages

I cant see how you have it setup. It defaults to my setup when I open your scan. You must have something missing in either the channel list or graphs layout.

[realcanuk]

MAF - lambda error....

maf lambda error.PNG

[dwright122]

I cant see how you have it setup. It defaults to my setup when I open your scan. You must have something missing in either the channel list or graphs layout.

I maybe but I can?t find any templates to review so I may be off. I know my commanded afr match my actual so I can?t be too far off but can?t figure out that one lamba eq. Graph

[dwright122]

It?s entered exactly like the above pic and there is no data filling the cells

[realcanuk]

It?s entered exactly like the above pic and there is no data filling the cells

make sure "equivalence ratio commanded" is in the channel list ???

[realcanuk]

https://www.hptuners.com/forum/showt...al-VE-Vehicles)