HP Tuners for 2005-2015

It's too bad we are still behind the curve in comparison to GMs stuff. They are feature rich loaded to the brim with options for tweaking things. Hey, we are definitely at a leaps and bounds difference in comparison to a year ago though, so I'll take what we can get.

 

Toyotas entire calibration is a bit archaic compared to GM / Ford / etc.
You guys aren't missing as much as you think. There really isn't any "wow" tables in there, that use complex calibration methods or algorithms. Nothing like ford or GM.

Toyota, even today in 2020, still uses the AFR method of swing AFR as close to a specific value. (basically X is base value, read sensor, make corrections to it to get close).
While other manufacturers use WRAF / True and accurate widebands and target a Specific value that must be met, and is met perfectly, and have full closed loop fuel feedback.


Last time I checked I think it's just missing some tables that modify airflow calculations based on VVT and such, and some other controls that people generally don't tune anyway. Like Coolant temp scaling, Accelerator pedal scaling, Throttle plate scaling, etc.
Haven't checked in a while though.

 

There is as far as retarding the timing on shifts, but fueling for TM no.

 

It sounds about right actually. That would make sense as to why target AFR of 14.70-14.75 is not always consistent at idle on these trucks. It's always bouncing between 14.65-14.85.

 

Technically lambda / target AFR on these trucks is 14.6 lol But yes, you will generally see some variance around the 14.6-14.8 mark.

 

That stoic target in the ECU is just for fuel calculations. It's not the actual target. Try to change it, nothing will happen except your fuel trims will change.
The actual target is...a slew of code that does this..

Calculate AFR target (will be between 14.3 - 15.2 depending on conditions)
Check AFR >
is AFR reading between 14.x and 15.x?
Modify fuel x amount
check again
is AFR between 14.x and 14.x (closer?)
Modify again
check again
etc
etc
etc.

I could post the code and you'd see it's like tree branches. But basically it's a "must be within" these values, and several sanity checks that keep it within a range.
but even then! Change all of these values, and it still will not change resulting stoic.
I have not figured out why exactly yet, but I think the ECU actually requires a certain raw reading on the 02 sensor itself.

I actually enjoy picking through the code more than tuning lol. which is why I can't wait to share all my patch data to the tuning world.

 

OOOOOOO interesting!

I have logged a few times where it does what i will call a "are the O2 sensors working calibration" where you see a very methodical jump above and below desired stoich.

Also interesting to hear that target AFR changes based on conditions!

 

Yes it does, depending on cat temps, coolant temp. etc.
Set your catalyst maps to some insane values and it will change, for example.
unplug your rear 02 sensors and it *should* change to something like 14.3.

 

I agree! It's interesting to know that AFR is never one solid afixed thing.

Good old emissions regulations, ever-changing in a consistently changing field.

 

Boys and girls. What year did the tacos go to a 6 plug ecu?

 

And what year did you guys get srs and tcs

 

I know they stopped the mechanical limited slip diff in 09 and went to the electronically controlled open diff for traction. Not sure if that is the genesis of TCS. SRS was probably way before during the 1st GEN era.

 

09+ I believe was the standard for SRS airbags and Traction control standard

 

2009

 

so far. My 2007 hilux is pinned exactly like a taco. Missing only the can wires. A 2012 of a mates is also pinned exactly the same as a taco including the 2 CanBus wires but with a 5 plug ecu. The hiluxs that have tcs and scs systems seem have Canbus between modules. The schematic is a bit bullshit tho.pin locations are correct but the plug allocation is all wrong. It also says the communication on that protocol only functions for the diesel ecu, but it has no kline wiring installed. As if the 1gr ecu is just its own untouchable entity which, clearly isnt possible. The tacos with tcs and srs, is that module the gateway to the obd for the engine ecu? Like the gms? Thats what my schematic shows anyways.

long and the short,
I THIBK
2005-2008 hilux needs a taco ecu and Canbus wiring
2009 hilux onwards seems to just need a taco ecu. As the wiring is there to link up the srs and engine ecu and then onto the obd. Whether or not our 1gr ecus have the Can protocol or not i havent figured out yet. Id say yes, but getting support is another thing.

 

There is zero pressure to divulge the code (as well lets face it you were the pioneer of cracking the taco code) but im very curious as to the code and how it works and when it wants to shoot for what AFR.

 

So these are the gauges and charts i use. Keep in mind you will need to be recording the channels that they require. Anything with load i used the "Absolute load SAE" over air load.... so thats easily changed if you are using JustDSM's channels. I use his + some more.

 

Following intently.

 

I hope to have a Canbus circuit wired up today. Toyota fucked me around with the ecu plug repair kits so im a day or so behind

 

Some of you may know, many of you may not, but I'm a Wildlife Biologist and also a red-carded wildland firefighter in training (need my pack test!). Aside from the car stuff, I'm a very passionate outdoorsman and volunteer my off-time towards animal rehabilitation. Now that we're settled into the new house and have our crafting supplies unpacked and my garage (semi) sorted, we can get back to producing goods and items to benefit the animals and people affected by the fires raging across Australia. The wife and I have been producing items to assist small rehab facilities that have the greatest need. She's in her craft room sewing and I'm in the garage cutting possum boxes and bird houses.

"OK JustDSM, WTF does this have to do with HPTuners?"

Until this crap is over, any tune or TRD flash I do will have 100% of all fees go directly to the cause. Show me a $50 donation to the cause and your tune is free, or you can send me the fee and I'll put those funds to use in materials or donate to efforts.

Just want to put that "PSA" out there.