I am trying to load a tune on a 94 z28 with tunercat rt. I have a usb to obd1 aldl cable and have it set on com 3 and tried on com 2 and it says communication error. Do you guys now what the baud setting is supposed to be on? or should I be looking for something else. thanks

 

You using the Keyspan 2.0?

 

Tunercat rt will not work with a 94. You need the regular Tuner program.