vF Tuner for the 3.5L Tacoma

Excited to play with this patch. It always seemed strange to me for Toyota to use a torque based throttle, but not a torque based shifting logic.

 

it will be an option in a new version of vF Tuner. you load your file, you select to apply the patch, vF Tuner patches your file, the new tables and controls become active.

I'd still recommend taking it to the dealer if you can easily repeat it. It can happen as a random occurrence from the software / logic but if you can easily repeat it then maybe something else is causing it.

 

Here is an example airload file that should eliminate your low rpm high gear throttle issues

Control Airflow
Expected Airflow

https://ovtune.s3.us-east-2.amazonaws.com/89663+04B04+Airload+Examplevft.vft

 

Thanks.
I see what you mean.

 

Will this upcoming patch also touch up the air load tables as well?

 

@OVTune
Could you please help explain the tuning of the 3D transmission torque maps a bit?
The tune I'm running now is absolutely awesome... with the exception of a ridiculously hard 3rd to 4th upshift at full throttle.

 

I have some issues with 04B14 that sound a bit similar. I'd like to smooth out M/T acceleration in 4th gear from 2000 RPM to 3200 RPM. Acceleration is smooth with very light throttle and very smoot at WOT, but in the middle its a bit herky-jerky. I've not had luck modifying the AirCrontrol Tables to try and smooth it out. I was going to try and read the tables you posted above, but can't open them without additional credits

 

@Vlady

Is this specific to your tuning files or in general something we should all apply?

 

agree

 

If you're an MT guy making a tune based on our latest Tune release, those ECUs are patched. You need to focus on the large 3D per gear torque tables, specifically the very first table, as the ECU has been patched to use that table for calculating throttle in all gears.

 

If you look at page 206, the post stated to smooth out 800 to 2000 in those 2 tables for 0.82 and 0.99.
We both have a curve in 1000 to 2000 at 200 to 500 airload.
I'll see if it helps with my dead pedal

 

How do air load and engine load relate to each other? What do they individually actually mean? Google hasn't been as helpful as I'd hoped.

Do they need to be edited together to produce the appropriate response? Does editing only one axis fuck everything up? What's an appropriate edit for example, for whatever result?

I downloaded Mat's example map but without the 'compare map' feature, it'd be agonizing to go through the maps to try to figure out the differences, and without actually knowing what I'd be looking at or editing, the information would be effectively useless. Currently feeling a touch above retarded.

 

I haven’t got to it yet, but I was going to copy all the cells from Mat’s and paste into excel, same with the version I have on my tune, and do the compare there. Really easy in Excel. Then once I see it, I’ll adjust from there.

 

I only edited 2 tables and listed what they were.

Airload / airflow is the ECUs way of limiting the total volumetric calculation.
As we know, there is no map sensor. So the ECU relies solely on the MAF + internal calculations of air. MAF alone doesn't give you the entire picture. So the ECU uses these air tables to map the amount of air given at various engine loads and RPMs and will use that to instruction the throttle.
Then there is the inverse table of it.

Imagine it as a VE limiter map + inverse VE limiter map based on internally calculated air @ sea level + whatever the ECUs calculation of what manifold pressure *would be* at a given throttle angle. Since MAP pressure is calculated which is nuts.

 

Hope we get a change log on the next release. Would love to know what is being wrapped up in the performance release. Seems like a lot of people are on the same page and Mat could roll this stuff up with whatever other magic seasoning he puts on it. @OVTune

 

Highly recommend to update these 2 tables.
Improved performance significantly.
Did a quick spin and the tranny did not kicked down to 4th on step incline like it used to do.
Dead pedal seems gone in 5th. I was pushing 80 mph in 5th , TC locked on long incline and did want to push my luck with state troopers.

 

Thanks for the explanation.

 

Are you planning on implementing these in the final 2.0?

 

@OVTune I believe before you'd said that the airload or throttle tables were different from MT to AT. Or other tables, idk, can't remember. For those of us who are looking at customizing both, what sort of differences should we be aware of and how will those translate to our edits?

Also, I'd sent you an email via zendesk WRT to another tuning/vF question that I've got

 

I’m down wit da sickness, but seriously I am interested for the AT 2.0 Final