Guys, I am not here to say THIS is the correct or incorrect way to do it. There are MANY tuning methods out there on the NET. I agree with some and disagree with many. I am merely sharing my own personal experiences from over 2+ years ago.
That being said, I just recently revisited the offset table because NOW we have all sort of support tables and VERY cool tools to collect this data with. Thanks EFILive!
2+ years ago, using LS1Edit, a Techedge wideband, I wanted to tune the car for maximum performance while keeping things simple and together. This meant using a known (GM MAF Table - Z06 85mm screenless) since that's what I was using, using 32lb injectors with math correct IFR table (since this is a known by flow data).
I merely wanted the PE table to be predictable. Meaning, if I commanded 12.9 AF in the PE table, then my wideband will also show 12.9 AF. After all, isn't the commanded AFR supposed to match the actually AFR? :P Is trying to keep things simple to much to ask for?
At the time, I was looking at "Professional" tunes for help. What I found instead simply left me in . 2+ years later, some things haven't changed... good or bad.
Anyway, the offset table was derived from a known offset table for the injectors. It worked. It still works. All tuning was and still is predictable and easy. Never blew up the motor despite having 86+ thousand miles on it and still running strong 95mph/119mph w/ A4 through a baby cam 216/220. Remember, this was WAY before the VE and SD rage! Now, I'm going to VE tune and by the looks of it, my VE tune isn't going to be crazy changes with MASSIVE spikes and valleys, etc. Just a nice little fine tune. Hopefully.
So, I figured I'd have others try it and so far good results. The below screen shots are from a beta testers LTRIM's with a first crack at 30lb injectors with stock offset table and 30lb injectors with matching modified offset table. NO VE tuning done, etc. This is a cammed car, 224 I believe.
Looks like it worked all while retaining the proper IFR table and I'm sure AFR. But hey, it ALL only my opinion!
There are MANY people from all walks of life that read this board, feel free to drop me a note with any thoughts about this.
Happy tuning all!