Newbie to Tuning

Discuss General Motors (GMC, Chevy, Pontiac, Hummer, Cadillac, etc) tuning topics here. Request definitions, discuss parameters, etc.

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custodian
Posts: 3
Joined: Fri Apr 09, 2021 2:45 pm

Newbie to Tuning

Post by custodian »

I have just started to learn how to tune. Now my question: How do I just read, write. make changes and then save? Why would I need a bin and xdf file to just do basic tuning?
krav84
Posts: 10
Joined: Fri May 28, 2021 8:39 am

Re: Newbie to Tuning

Post by krav84 »

Im just a newbie as well so "trust but verify" and take my advice with a grain of salt, maybe 2 ;-)

i have a 1220411 pcm on my 5.3 LS/vortec
Step 1;
I made a bench harness, in my case its 4 wires to blue pins 1which is ground, 19&20 both power, 58 is serial data, which hooks up to a OBD2 connector where i have my OBD2 Lx dongle plugged into.
Step2;
Then I used PcmHammer to indentify my pcm and OS ID etc. Mine is a 12212156 OS
Then i clicked "Read entire pcm" which automatically prompts you to save it, so name it Stock bin so you know and have a Stock bin file to fall back on.
Step3;
Then I used TunerPro to do the tuning. First off i had to install the corresponding XDF to be able to read the OS 12212156 which i got from an LS1tech forum member
After that i opened that saved Bin file and just browsed thru the parameter tree to Delete VATS, Enable fans by having them come on @210/215 and both go off @190
Then click Save as and name it Modified bin with whatever detail u wanna include. This way you have your stock unmodified bin and now your new modified bin.

the only problem i had was when i clicked Save as i was able to save my bin but i got a Error some checksum files may be missing.

Step 4;
i havent completed this part yet because of my error, but i think if this error doesnt happen to you, you should be done editing and you can go back to PcmHammer.
You will probly need to re-initialize to wakeup the dongle and reconnect. then Open or click on your new modified bin and click
" write everything to the PCM. OS, Calibration and Boot. "
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