Instructions for custom tuning the truck with HPTuners.

Hi all,
I have recently purchased the HPTuners setup and started playing around with the software.
I quickly discovered that there is barely any information out there on how to tune a Tundra, so I am creating this thread to help anyone else that is interested in tuning their own truck, or just wants to get a better understanding of how the Tundra ECU works.
Please keep in mind that I am not an expert tuner by any means and this is more of a hobby for me.
Here is the first video describing the setup you need to buy and what is involved in flashing the tune to the ECU:

https://www.youtube.com/watch?v=6giB0pu9wKk

 

How To Tune A Toyota Tundra With HP Tuners - Raising The Rev Limiter (Do At Your Own Risk!)

https://www.youtube.com/watch?v=w9YX1l9z8gs&t

 

Dope! I am definitely going to follow along. Im not happy with my current tune and I might make the switch. Keep it coming and thanks for experimenting!

 

Love those Long Doors.

 

How To Tune A Toyota Tundra With HP Tuners - Raising/Removing Speed Limiter Governor

https://www.youtube.com/watch?v=L261GHDxkR4

 

How To Tune A Toyota Tundra With HP Tuners - Removing 4LO Throttle Limits For Off Roading

https://www.youtube.com/watch?v=7kI4K5Wh5Jg

 

Dude! This is beautiful thx! Awesome work you are doing with this

What about 4hi? Seems like the same thing happens in deep sand or hill climbs. It doesn't feel like I have full power. (I was able to remove the limits in 4lo, but not 4hi. I am starting to wonder if its possible)

 

There is a throttle limit setting in 1st gear in 4HI, but on my stock TRD supercharged tune it was already set to max throttle opening angle. Your NA tune might be different.

 

Perfect. That helps thanks man

 

How To Tune A Toyota Tundra With HP Tuners - Disabling Air Injection Pump (AIP) Fault Limp Mode

https://www.youtube.com/watch?v=kNwB9fiMFm4&t

 

@ViktorG thx again for this information. My buddy @Vizsla @831Tun and a few others are gonna jump on this hp thing and we're gonna have be asking you a bunch of questions soon haha

 

Thanks Viktor.

Does HPT have any way to remove the air injection pump code reporting?Would be great to just remove the dash light code all together.

 

@ViktorG i been meaning to ask, what 750 injectors did you go with? Denso?

 

Yes, you can disable any codes you want.
On my truck, I have removed the air pumps, air pump driver and all the wiring/piping completely.
Will make a video on that sometime soon.

 

They are modified Denso injectors from Five-O Motorsports

 

that’s where I was looking the other evening. If I go that route with the prospeed rail/pump/lines could I dm for some baseline data you found to get started with tune? Do they come with needed specs/data sets when you purchase?

 

Thanks for doing the videos!

 

Have you figured out how to remove torque management when shifting?

 

Yes I have.

 

They come with dead time tables, but I found I had to modify those anyways to make it idle right.
Yes, I can send you my tune specs for those injectors.

 

my man!!!

 

Ok..now I’m interested!

 

@ViktorG Awesome!

Wish list:

1.) Speedometer re calibration for different tire size.
2.) Improved fuel efficiency.
3.) Cruise control shift lock to OD
4.) OD drop to 5 instead of 4 when down shifting
6.) Harrop tune

 

will you be making a video on it?

 

Sure thing

 

Also intested in what TM you've removed for shifting. I see Spark pull (which I am fine with) but also fuel pulling at shift. THAT needs to stop asap.

Also, anyone here joined the HPTuner forum? They have a repository post with some really good info.

 

Following.

 

@ViktorG Is it possible to use the HP tunes to change the shift points? I've put a 3" lift and 295/70R18 tires on my truck. I have the tow package with the 4.3 diffs. If I put it in tow/haul mode it drives great, but I have to manually enable it every time I start the truck. I'd prefer to retain the tow/haul shifting characteristics if it could be the default behavior. If you could provide any info on how to approach making this change, I'd greatly appreciate it!

 

Yes, you definitely can.
Copy the tow/haul shift tables and paste them into normal shift tables.
Done.

 

In addition to that, change the ETC,
Electronic Throttle Control in regular mode to match those in Tow/Haul mode. This essentially does kind of what the pedal commander does and opens the throttle more with less pedal, but it will make you have the exact same feel that you get in Tow/Haul.