Try the opposite copy / paste, move the modified fuel and spark tables into a known good TCC .bin.

There is also the compare function in TunerPro to verify the TCC parameters are the same...

I thought posting my replay to a PM on this thread would be helpful for 7747 tuning.

There are comments in TunerPro, use the F10 key to see the comments.

See screen shots of some VE Table...

I think the ECM will go into limp mode with a chip installed backwards. Likely the chip will be damaged if installed backwards.

dave w

I don't remember.

dave w

Most wide band O2 sensors (WBO2) have a warm up time of about 30 seconds. Connecting the WBO2 to ignition power with power in both "on" & "start" is a good plan. With "Key On / Engine Off" for...

Standard disclaimer ... Likely goes without saying, but here goes anyway ... The .bin files I've posted work well for the vehicle it was originally "Tuned" for. Individual "Tuning" results can /...

The timing tables is a very important parameter. I'm not sure which tune I posted you are referring to, if the posted tune has the stock Vortec timing table from a Vortec black box PCM it will work...