Okay, let's sort this out.......
1st gen (88-92) Probe GT's have
2.2L Turbocharged; Engine code: F2T
Made by MAZDA (NOT FORD)
145hp (AT THE WHEELS)
190 lb/ft torque
Boost is at ~7.3 psi stock
Compression is 8.5:1
0-60 is 7.5 sec (Road & Track)
Boost can be raised safely to 12 psi with a cheap manual boost controller without any other mods. To go up to 15 psi, the ECU needs to be reprogrammed, which can be done for about $200.
Fuel modifications usually aren't necessary, as I have seen some go 18-20psi without fuel injector upgrades, except for a high-flow pump.
Several turbo upgrades are available for these cars. The stock turbo maxes out at ~15-16psi, beyond that it is blowing air that is too hot to do any good.
The horsepower measurement was taken at the wheels because for marketing reasons Ford did not want the number too close to the Mustang's.
If you need any more info, let me know.