Segment swap causing different results than manual copy / paste

[samh_08]

Those tunes don't match OSs...how did you segment swap?

Good call, going back through my emails I seen this: (me talking)

"The 2004 SSR tune on tunefiledepot makes the throttle work correctly.

Being that it is the same OS, I find it odd that it works.'"


I at one point flashed the holden tune listed above and found it worked, but later tried the SSR and it also worked AND it was the same OS.

Been a long time since I thought about a LS1 PCM's operation, but, isn't the TAC module required to be matched in some way to the pedal and PCM tune? In other words you can't take a truck pedal, Cadillac TAC and put a Holden PCM tune in.

That was my thinking until I started flashing other tunes and getting different throttle operation with the same hardware...?

[samh_08]

When I was initially playing with different tunes to get the throttle working right, it was winter so I couldnt take it out and see a real world result. Here is what I found...

So here is what I tried:
Swapped all segments from my tune > holden = No good
Swapped ONLY engine segment from my tune > holden = No good
Swapped ONLY engine section MANUALLY from my tune > holden = Perfect!
Swapped everything MANUALLY from my tune > holden = Perfect! --->> LOADED THIS TUNE

When I open my tune, the engine size is wrong (says 5.3L when it was 6.0L)
- The OS is the same
- All of the segments have different ID's and checksums

The car runs pretty good overall, except for cutting spark to 0* after a 1-2 shift AND keeping the timing at 0* until I left off.

[joecar]

Engine size appears to be documentive only.

[samh_08]

Thanks Joe. It must not be derived from B0104 cause I changed that...?

I've NEVER had the car drop timing like it did with this tune, so whatever is 'hidden' is definitely affecting the tune. Is there tools or anything I can use to view this data?

[5.7ute]

If you can get the files in .bin format you can compare the raw hex values with Tunerpro.
Once you have the definition built in Tunerpro you then make a .cax so you can edit with Efilive.

[samh_08]

Just drove it again and posted a screenshot of what is going on. I can get it to repeat every time from doing the following: Rolling along in first, going WOT, shifting to 2nd. As soon as it hits second (maybe a tad sooner) it cuts the spark advance until I let off.

In the attached shot, I hit the throttle letting it shift into second then let off enough to pick the spark back up.