vF Tuner for the 3.5L Tacoma

@OVTune sent a support message over a week ago and not a peep.
See you regularly posting here, but not an email response. Just wondering what’s up....
Website no longer mentioned delays....

Thanks for clarifying.

 

Two things I'm aware of:
Changing torque maps does change my shift points.

And this was recently posted on the vF forums:
https://forum.vftuner.com/forum/toyota-5-7l-3ur-fe-development/2783-tundra-helper-tools

 

This is a good point to keep in mind, we don't know how the truck calculates a shift, or even if we know all of the maps that are used. We only know the shift schedules and torque maps are at minimum a part of the calculation.

But, the minimum upshift speed at 0 accelerator does not seem to be affected by the torque maps in my experience. So, if I set 4-5 upshift at 0 accelerator to be 46, I expect the truck to never shift into 5th gear until I hit 46mph. But, my truck will shift about 42mph. I messed with the torque tables a bit and wasn't able to get this to change.

I think what is causing @Mooseditty17 issue is that the truck likely reads a rotating speed of a shaft. vF Tuner converts this to linear vehicle speed, but there may be a slight error in the conversion multiplier. Go to a bigger gear ratio, and the error grows larger, since you are now multiplying larger numbers.

 

Anybody dicked around with the 4lo shift tables in vF 1.2.9.9.8 yet? Bottom of the map list, under "Faults" (for whatever reason)

 

It sounds like the shift points are based on tire size and differential size. My old Tundra had 4.56's and 35's. It said I was going much faster than my actual speed because of that. But I've since learned that the speed info displayed is no longer pulled from the shaft speed, like I had. So you may be correct, or at least heading in the right path.

 

100% confirmed.
Both diff 1 and diff 2 have 5.29 entered.

 

It was my impression that tire size and diff ratio values we entered would calculate output shaft speed for us. It just seems now that I've been on both ends of the ratio spectrum, it doesn't work very well... Wondering if this was an anomaly, or if others had a similar situation.

It's not the end of the world, I just have do document where it shifts and how much to raise or lower as opposed to entering an exact speed I want it to shift. Little more work, but no biggie.

 

Well that throws a curve ball towards tunes now as well. It seems clear that we can't make a tune, and to support all tire sizes/diff sizes all we need to change are those two parameters.

I find it odd that vF has been out for about a year now and you're the first to report it. Maybe you're the first to go from stock gears to 5.29's while running a tune before and after?

 

Also the one who found out that the acceleration shift tables in older vf versions actually controlled low 4 shift points. Hence why we have low 4 shift points now.

And yes. If you put values into 4-5 and 5-6 you'll get 5th and 6th Gear while in low 4. They do have their own speed limiting factors though. Separate from global limit but much the same in behavior.

 

You ever find a way to get into 6th? IIRC, you had issues with that.

 

It was overcoming a rev or speed limiter I couldn't figure out. It would hit a speed / rpm and cut out, then resume to same speed and cut out again. 4000 something rpm and 50 or 60 some mph. Way below speed limiter and fuel cut offs!

 

Good way to test if it's RPM or speed - give it a shot with your 5.29's.

 

Well the reason I asked is because a tester of mine reported throttle being way too touchy in 4lo (due to how aggressive it is in 2hi/4hi), which means that until the 1.3 update releases with separate 4lo controls, the only real fix is to neuter the throttle response overall, and that the 1-2 4lo shift was rough, and the 2-3 rough as well but less so. Around 4-5 mph with hardly any throttle input, it shifted 1-2 but seemed like it wanted more rpm's and shifted rough as stated. Then up at 7 or 8 mph it shifted 2-3.

For the record, the tester was dicking around with this on a dirt road, so not really great 4lo conditions, too much traction really, but I've decided this is worth looking into, especially the throttle I suppose. LGS he felt more fine pedal control was needed for 4lo

For what it's worth, it won't be an issue I think for anyone who doesn't use 4lo often, or even semi-frequently, and if they don't crawl I believe.

 

I edited my torque maps and was able to remove the jerky feeling when going from a stop. Haven't messed with the 4WD map though.

 

You smooth them out or just make them match one in particular or what?

 

I noticed that 1.2.9.9.8 only has Optimal transmission torque tables 11+, the lower numbered ones vanished.

 

I combined the ECT and D tables together. Testing things out.

They're not gone, necessarily. They've just been renamed. I didn't mess with any of those.
If you open up one of the torque maps that seem "new" and click on the "i" button, you'll see the old map name.

 

Correct me if I'm wrong but until Mat releases his planned update with 1.3, there's no separate 4lo throttle sensitivity settings right? The tune is using the same tables for 2/4hi as 4lo?

 

No idea. Haven't been in 4Lo since I attempted crawl control in my 2020 to see if it could climb a curb. I was running an unedited 2.0 file at the time.

 

Y'all need some 2LM.