HP Tuners Modifications for GM Trucks.

[LSCALADE]

Attached are my 2 files (BASE) and Tuned:

Things I have done.

Engine side:
1. Enable the flex fuel sensor.
2. Ethanol content min and max values adjusted to 0-80%.

3. Adjusted Stoick table so it reads from 14.6 to 9.

Transmission side:
I have adjusted the shift speeds and scheduling.
TCC apply speeds adjusted so they are 1mph after a gear change.
Pressure bumped from 26 to 31psi.
SLip reduced by 50%.
DOD Disabled.

I have been self learning HP tuners for exactly 1 year now, and I have figured out quite a few things and will help anyone who has any questions on the things I have done so far.
As far as tuning spark tables and other things, I am a newbie, so you've got to ask the professionals.
Feel free to compare my stock and modified V3 file to see what changes I have made. Note that all these changes were done slowly, one at a time, until I saw results.


Next on the list is AEM wide band oxygen sensor integration into the ECU With a pass through OBD plug for the gauge.

 

[Joseph Garcia]

Thank you for volunteering to assist fellow Members with HP Tuners. LOTS to learn and share there, for those who want to tune their trucks themselves.

Just another reason why this Forum ROCKS!

 

[LSCALADE]

Here is a factory E85 tuned 5.3L L83 that can be used to see what was adjusted by GM engineers with factory calibration.

 

[TheBigCheezeBall]

Thanks @LSCALADE !
I have done some very basic work on my transmission:
No TCC in 1/4.
Reducing slip by 75-90%.
Turn off DFM.

I have been toying with the idea of some more changes, but somewhat held back by ignorance.

You mentioned that you changed the TCC to lock 1 mph after the shift point. It is my understanding that once it locks, it stays locked until it hits a release point (even through shifts) So only the first lock point has any effect unless you happen to hit a release first. Is that your understanding and observation? I would have thought it would unlock between shifts, but that doesn’t seem to be the case as far as I can tell.

Also do you know how you can access the TCC table for the “M” mode? I would like to prevent any TCC lock in M mode if possible.