Tacoma - OVTUNE - VFTUNER - Update Info and Original Development

I got some extra 4.30s if you end up wanting to go that route.

 

I saw something about @OVTune posting the 1.05 files on a blog? Is that still a thing?
I got my tactrix cable a couple days ago and have been waiting for an email back... but if there’s a quicker way I could get the 04b04 tune that’d be great!

 

Pm me, curious about cost and effort

 

Update...
2017 TRD OR DBLC, A/T, 285/70r17, 2” Lift, ARE Overland cap painted with Linex.
TRD Pro exhaust.
TRD CAI.

Came from original 1.04 91oct always ran 93oct.

Now on 1.05 93oct.
After 420 miles all I can say is sweeeet!
Gets up and goes like 1.04 91 but way smoother shifting.
And gained a definite 1 mpg.

My only hills being fwy overpasses, checked cruise control, same, way better holding gear and shifting is nominal. Awesome!
I did use ETC mode in fwy hi-speed traffic.....I will call it insane mode....sensitive the way it needs to be, truck gets it on.
Truck drives the way I would have expected it to, now. Shame on Toyota!!!
Matt awesome job!

I am going to try the 1.05 87 tune and run 91 just to see if any better than what I am running. Otherwise back to 93 oct tune.

Regardless, way satisfied customer!!!
Matt...again, kicked ass with this tune!
Mucho gracias!

Picture of what truck looks like with OVtune 1.05 93 octane.....
And for all the haters out there, got my MESO TRD Bro badges to replace my not street legal TRD Pro badges.....

 

So, I haven't been keeping up with this thread lately. However here is my short and sweet review of 1.05:

Done around 1k miles on 1.05 91 octane (idle fix). Overall I absolutely love it. By far best truck has run, in the 3yrs I've owned it. I get 15mpg in my daily commute which is a very short drive to work and back. Today I drove almost 200mi to RMNP up north in Colorado and involved highway, city driving, 4WD in snow, up and down mountains. 19MPG!! Loved that. And that was loaded with probably 500lbs of gear in the truck.
My ONLY question is this. Probably 1/2 dozen times the truck shifted down 2 gears when it should have down shifted 1. Not sure what caused it. I kept an eye out to see if it was something I was doing, but I couldn't pin point it. I made sure I was applying very light pressure, it was always over 60mph, trying to keep up with 70mph traffic. "Felt like" it was in 6th, needed more power, so I LIGHTLY pressed, no power, LIGHTLY pressed more and down 2. So, once I just held it in the first lightly position where it didn't pick up speed, or down shift, and it actually did down shift eventually, after it didn't pick up speed in about a minute, but it was a full minute when it finally downshifted the 1 gear as desired. This was maybe 6 times out of 200mi though. If that could be fixed, i'd give it a 10. So I guess I'll give it a 9. I am lifted almost 4" with 275/70/17's (32's). Not sure if that's something custom tuning could fix, but I guess I'll find out when that becomes avail (if it hasn't already). I'm really bad at describing things, so there's that too..

 

Drove an 18 Ford F-150 yesterday for 300 miles. Has the NA 3.3 in it with 6speed automatic...

Ford claims it has a 12.1:1 compression ratio with port and direct injection. It was a 2wd version crew cab. Between 65 and 75 mpg it got 23mpg. Aside from the dumb auto shut down at stop lights it did have some low rpm stumble more pronounced then the tacoma.

However...it had way more low end torque and grunt then the tacoma. From 1100rpm it would accelerate nicely or if needed would downshift to the next gear with almost no feeling. I noticed it makes peak torque at 4k rom rather then our 4600rpm tacoma. It also had a smaller bore and a longer stroke then our 3.5 but puts out 290hp and 265lb ft of torque.

The inside was nice for an almost base truck asides from location of cup holders. And the headlights were absolutely horrible. It was quiet with no wind noise and little rd noise.

I can only imagine what a loaded 150 with and eco boost must be like. I do like my tacoma...but Ford has them beat in almost every way with the f150 and consumer reports just gave the tacoma a well below average while the f150 is above.

Toyota has dropped the ball on this one...

 

Looks like your diff is leaking as well

 

new version MT coming up tomorrow. (Been working on finalizing the files this weekend)
Lots of stuff for next week including possibly first look at turbo kit

 

it can be modified via shift table tuning, but remember the more generous we set it to go to 4th the more the truck will be going into 4th on the highway. the current setup is the only way I've figured out how to do the shift tables to eliminate it from going into 4th all the time on the highway.

Some of that downshift range has to be bypassed, as it's controlled by accelerator position and speed.

 

Don't get me wrong, I love the tune.
It's almost perfect.
But when in 5th, mine does what's mentioned above. Going 60, need to pick up speed, press a little, nothing, press a little, 3rd screaming. I really do love the tune overall. By far the best it's run. And this one little thing would make it perfect. And i'm fine with waiting till custom tuning is available.
I just don't want it to skip 4th.

 

No worries, I appreciate the feedback and driving you guys are doing to find any little left over quirks.

The only thing is the way controlling gears works, makes 5th and 6th effectively *useless* without bypassing some of the "useage" of 4th gear. Part of the problem is the axle speeds in 5th and 6th. It creates such a big enough drop in RPM that small accelerator angles create large load amounts and request torque is way higher than that RPM can produce (based on internal torque tables by engine rpm / throttle)

Let me see if I can explain it.
6th gear can go to 4th depending on Accelerator position (which gets translated to requested torque)
5th gear can go to 4th also, depending on same conditions
Due to very low accelerator angles creating high load on this truck, 10,15% throttle in 6th may be a request torque of 250..300 Nm (internal values not real world).
The truck uses this value and closely matches to a shift table (4th gear mainly).

Currently the only way around this is to bypass some of 4th gears range at certain speeds, otherwise any time you touch the gas beyond about 10% throttle in 5th or 6th it goes back down to 4th. Because 5th and 6th gear at 10,15,20% throttle angle is creating a torque request that cannot be produced at that RPM

Hopefully that makes some sense.

like this:
5th gear. 2000 rpm. 30% throttle. axle speed xxxxx > look up torque map > "250nm"

Look up acceleator to torque ratio / request > "280nm"

250 < 280 ----> check axle speed limits> within limit? > downshift

tune correction > within limits? "NO" > do not downshift


You may think " okay just tune the torque tables to higher values so that it will bypass the shift." ... I wish. Nope. If you do this the transmission uses that value to calculate shift speed, pressure, and torque converter control. As a result the shift is harsh and erratic, or extremely sloppy.
Transmission tables have to closely match what the engine is expected to produce in terms of torque for that axle speed (translated to rpm) and it isn't much torque at such low rpm.

 

Any eta on the 2019 AT 04B31 release?

 

It's a new file.
so for S lock, the people who would like it we will send a S lock version of whatever octane tune they want to use.
Once we get ready to release S lock there will be a blog post dedicated to how it works exactly, and how to use/enable/disable.

 

When you update for 4.88 or 5.29 gearing will you need to adjust those tables across the board to deal with the increased torque at the wheels the gears provide?

 

It's definitely not the "perfect" way to do it but currently the only way to do it.
I've been working on patching the entire logic.. but this is a months long process, and will take so long to verify safety in all scenarios. Not to mention verify all aspects of code due to Toyotas indirect addressing. It's very difficult stuff when the code only directly addresses an offset to use to calculate the next map in the 4D scheme of .... blah blah blah

yes, which is why I purchased 4.88 gears, and why some trucks have shifting issues with the gears installed.

 

Gear lock tunes are and have been done for quite a while. Releasing them won't interfere with the turbo kit at all, since I finished those files before even posting the video showing it.


It's a big difference yes and with 37's... which I think is the biggest I've heard so far, it's going to be very very different.

 

For anyone with the Adaptive cruise control, I've found to help avoid the 5th>3rd Shift at highway speeds is to use the adaptive cruise control at highway speeds. It will hunt a bit, but if there is a lot of variation in speed due to traffic, it will help. It is still Toyota's tune in adaptive cruise. Everywhere else 1.05 is awesome!

 

Will there be a way for the ATs with 4.30s to get the gears modified in the ECU or does it require completely new tables as well?

 

Why not just use the current method? It’s quite easy. I’m not very computer savvy, and I flashed my truck in 10 minutes lol.

I’d rather wait a couple days for an email from Mat than wait a few months for the handhelds to come out... not to mention they’ll probably cost more too.

 

pm me your email (or send a reply to your ticket: include ECU ID, dongle, etc). I'd like to send you a file to review. I really dont want people going backwards. to older stuff