As you can see there are 300 + IR Codes. It takes a lot of time to create the hex for them. In the 10 years I have working on that list I have had 2 requests for codes from 2, 3, and 4.
Anyway what receiver are you installing? What control system are you using? Wouldn't you be better off using a controller with different IR outputs going directly to the IR In on each Pioneer receiver.