4l80E convertor unlocking an adding the needed parameter to tune for it.

[catman3126]

So let me start by saying I have read a lot of threads about this so I know what's up with this.

My first question is I saw that TAZ posted he has added parameters to his V2? how is this done? is he rewriting the code in our V2 to gain access to different parameters? I tried the Segment swap and that didn't work it was stuck in one gear and when I hit the throttle it locked the convertor and killed the engine. any other options?

[joecar]

No, he did not add the parameter to V2 (V2 is just an advanced protocol box with additional features).

Taz has found (by self expended time/effort) the address/size/format details of that parameter...

EFILive V7 tunetool allows you to enter those details to expose that parameter (via .cax file).

[joecar]

What exactly did you segment swap from/to, and how...?

[catman3126]

I did a segment swap from a auto corvette 4l60e tune with the same OS as the 6.0 lq4 tune I'm running. I thought that was all that needed to be done but I guess that is incorrect. Any insight as to what I need to do to keep the convertor from unlocking at 0% throttle while driving?

[catman3126]

I did it by opening the lq4 tune and opening the F body tune and Copied the trans op and diagnostic seg an saved the lq4 tune. It changed them like it should but then it didn't run right

[joecar]

The Y/F body trans 4L60E segments won't drive the 4L80E trans (not without some minor harness mods).

EFILive tunetool does not provide a parameter for keeping trans (4L60E or 4L80E) locked on throttle close.