Toyota Repository

[SlowNStock]

Hello, I'm new here and had a couple questions about this process that I'm betting some of you very smart people could answer. I've read over much but still have some gaps in my understanding.

1) When writing .CUW / .HPT files to the ECU are we only writing to the ECU that controls the engine and transmission and not all of the other modules (HVAC, ABS, etc)?

Correct, we aren't writing to any BCM.

2) I have a 2011 Sequoia 5.7 Flex Fuel and am wondering if I can use the Tundra files and tunes without a problem.

You'll always use the virtual read provided in VCM Editor. You can copy changes over from a Tundra file using the Compare tool.

3) I'm looking to delete the Secondary Air Injection System (SAI or SAIS). The later model Tundras don't even have this system, if I used their tunes (is this the .CUW or the .HPT files?) that should completely eliminate the system, correct?

You can't eliminate the system by loading a different calibration (later Tundras still have SAIS, anyway).

4) If I used a later model Tundra Tune that is not a Flex Fuel, would that eliminate all of the Flex Fuel sensors, etc and therefore essentially make my vehicle a non-Flex Fuel (this is something I am after, as the Flex system seems to degrade over time)?

There are no sensors, ethanol percentage is determined virtually; converting cannot be done via calibration alone.

[Lsteffen1992]

Still having trouble accessing the repository. was going to add my S/C Tundra Factory Calibration and hopefully start filling in since there is so little info out on our trucks..


Any help is appreciated

[[email protected]]

Anyone got a tune file for urd supercharged 2008 tacoma x runner or a tune file I can’t Atleast start with. Much appreciated.

[ayashiko]

Could you please provide more detailed information about the file you need?
The identifier can be found using the HP Tuners software. Perhaps you have a virtual read file specifically for your engine control unit?

[[email protected]]

I’ve been trying to get the virtual read and my unit seems not wanna help me out. Just says failed when I try to read.Ive got all the latest updates on everything. I can get more info later as I’m at work.