2016 OVTune Tacoma 3.5L Manual Transmission / Engine ECU Reflash

Yup, in the same way that reading and saving the OEM calibration is a copy of the factory file. I'm thinking that the file name that pops back out when you read anything from an ECU is just part of what PCMFlash does (as was eluded to earlier).

Just sayin there's no real need to.

 

One more question and not software related. Does Matt eliminate the Atkinson cycle and just runs the Otto.

 

haha, nope.

 

I wish! Wait, but fuel economy..

IIRC he did say he was doing something with Atkinson..

 

I knew I saw it somewhere.. check out post 8908 by Mat

https://www.tacomaworld.com/threads...g-alpha-release.495735/page-446#post-16599079

I know it says Auto trans development, but I'm thinking it could port over to M/T like so many other things.. after all It's just manipulating VVT right?!

 

Interesting, It would be nice to have two identical tunes but one with the option of running full Otto. I guess will see in Feb how it impacts mpg.

 

Yeah that would be an awesome option for a lot of people. Personally, I'd like OTTO all the time below a certain speed, say 20Mph?
So slow speed off road and especially engine braking in that situation would be full 11.8:1 compression. There's still DFCO to deal with I realize...
Even in high range I think Otto would be great when first taking off (response-wise). Then when cruising at low load/higher speeds you still have the Atkinson fuel economy benefits. We'll see what comes out in the wash with Mat's research..

 

I'd be so all over that. i really can't stand the numb response you have in Atkinson. mpg isn't a factor for me... i already run her hard and almost never see 18mpg. losing another 1 or few ain't no big deal. I'd sacrifice a bit more for improved throttle response and a cleaner & more gradual VVT.

 

And so, "track mode" is born!

Aww yeah

 

I have a theory that AC actually provides little to no significant mpg improvement in many real world scenarios ( I get 15-16 mpg all the time on my stock truck 75/25 cty/hwy pre and post 87 ovtune). I suspect that it does provide significant mpg improvement in the controlled environment in which they get their mpg rated for CAFE standards and that is the real reason for the AC. A 10% increase for CAFE measurements IS significant for a manufacturer.

I also think the AT/OTTO cycle transition is a contributing factor to the "interesting" nature of the drivability of the Tacoma in general. I would be happy to try a no AC tune if one was provided.

 

I would love to see if Atkinson could be turned off completely. Worst idea Toyota had for this truck. They should have taken the solid 4.0 motor and tweaked it IMHO.

But, if OVtune 1.03 really makes the truck a whole new beast, then I can't wait to get it.

 

The Atkinson cycle on this engine actually was a great idea for Toyota from an environmental standpoint. Just give up on the 4.0. It's a dying relic of a motor and it's time has come.

 

This will be the last year in the 4runner. It all comes down to emissions and the 4l can't cut it.

 

can't really agree with this, unless you are also saying that, in the real world, CAFE is also helping the environment. pretty confident it's not... all just impressions of humans doing something to feel better about themselves whether the something has any real world impact or not.

all this does is help them meet the regs IMO. all smoke & mirrors to the regulators and 'yota, like all manufacturers, knows it.

 

I'm not saying that the new motor is going to save the world. It's not, we're all doomed but the 3.5 is a cleaner motor than the 4.0 from an emissions standpoint and in this day and age that's the most important thing.

 

made me laugh.

 

bang on brother! witch is why i wanted both rev hang and defco killed. let the corporations do there part.
besides the way things are going they might ban the combustion engine so let us enjoy what we have.

 

The motor puts out horse power than the previous engine and uses less fuel. Not sure what the problem is.

The engine switches to Otto if you floor. If you monitor MPG usually the current meter, you will be able to tell when it switches back and forth, there is noticeable increase im MPG

 

you can feel it switch, it's obvious.

which is what we're talking about here... "the problem" as you referred to it. it's not a problem, we just need an improvement for....

:: everybody join in::

DRIVEABILITY

 

Ok, lets keep this th

That extra horse power is not even useable, really. The max horsepower is achieved at 6k RPM, which is redline. The 2nd gens had max HP about 1k before redline making it more useable IMHO, so without being overly technical, the 3rd gens greater HP is irrelevant.