Quote Originally Posted by ScarabEpic22 View Post
You can read/edit/save tunes plus datalog/scan/clear codes for free. The first time you flash a controller, that's when you have to license it. I've pulled tunes off friend's cars to build a repository and never license the controller.

The blackbox PCM is just older and not as powerful plus much more limited in the parameters available. For example, the 1 spark table (there are 2 in the LS1B PCM) is a 19x16 table. The LS1B is 25x29 and there are 2 (high and low). The breakpoints are smaller and allow for different spark values every 200rpm for the LS1B vs 400 for the blackbox.

I dont know if you can segment swap a blackbox PCM from an automatic to a manual transmission which might be another issue if you're putting a 5spd behind it.

The blackbox PCM has entered end of life, so if there is an issue, it will not be fixed.

Download V7.5 software from the main EFILive.com homepage and then download these tunes to compare. Don't worry about the displacement differences, that's easy to change. More importantly, the first is a blackbox PCM and the other 2 are LS1B 512kb PCMs. You will need to use one of them as your base tune for the swap so the PCM knows how to run a BBC. (Links are from the tune repository DropBox)

2000 C3500 7.4L Stock tune: 2000+Chevrolet+C3500+Truck+Automatic+L19+7.4+Litre +(16265175).tun

2002 Express Van Stock tune: 2002+Chevrolet+Express+Van+Automatic+L31+5.7+Litre +(PCM+12212156).tun

2002 Silverado 8.1L Stock tune: 2002+Chevrolet+Silverado+Truck+Automatic+L18+8.1+L itre+(12216125).tun

the drop box is now all empty. Did someone else take up the tune repository?

Am interested in the 2002 Express Van Stock tune with L31 5.7 and 4l60e trans: