I'm getting some conflicting data from my searches. Mega Squirt claims that the early Probe uses the same hardware as the Mustang (at least on the V6), when I enter the part number for a replacement Probe ECU it is the same number as for the Crown Vic and some other Ford vehicles - but some other sites claim it uses the Mazda electronics. If you can post the catchword or calibration code I might be able to track it down more definitely.
How many lbs of boost can the stock engine handle before it self destructs ?