Introducing the 2025+ 4Runner ECU/TCU Tuning Solutions from Overland Tailor Tuning (OTT)

Simulated data is an indicator, not proof. This is because simulations like that have quite a few assumptions, that may not be true, baked in. You are probably right, but I have seen many cases of theorycraft to fall flat in practice to consider it definitive.

 

The above isn’t “simulation” data. You like to argue I gather.

 

first mover advantage.

Also.....I'm super happy people are working on this now so when other people like me get one or something with the same engine all the work has been done and it's ready to flash the day I get the new truck.

 

You know the dyno knows the speed during the runs, right?

It’s ok to be wrong. Reviewing objective evidence and data is how we all learn.

 

As I never heard of them, so I did finally look up OTT, they would have this data. Because of how curves looked like, I assumed this tune was untested product by a lone operator and took everything the OP said with a lot of skepticism. Maybe it wasn't warranted in this case.

Also, my preconceived motion that 6th gen engine is a turd, played into this as well... not that stock curves convinced me otherwise on that point.

 

So you’re saying that under normal driving conditions from 1000 to 2500 RPM the 4.0 is actually better.

 

Only when you’re transitioning from part throttle to WOT in those RPMs.

On the road in actual part throttle transitions the turbo response is nearly instantaneous. There is a “split second” advantage naturally aspirated engine has, but in less than probably 1/2 seconds time a small, modest part throttle input on the new engine will deliver far more torque than even the 5.7L V8 in a Tundra can deliver.

Guys, the 1GR-FE is one of my personal favorite engines, but the new T24A-FTS outperforms all prior generation motors in virtually every metric. The ones it hasn’t, just require time for it to earn its stripes.

It’s finally brought the wildly popular Tacoma and 4Runner nameplates up to modern standards with regards to power train performance.

 

Just go watch youtube reviews and reactions to acceleration and highway driving. The 4 cylinder is far better. And that's before a flash.

 

I have never felt that the 5th gen is underpowered or slow. It drives perfectly fine for the boxy soccer mom mobile that it is.

 

I like them too, considered purchasing one before they stopped production. Nothing wrong with them at all.

 

Great numbers and good to see how much the stock 6th gen makes too.