So.. i just got myself a p28 for my d15b vtec cause i was running an obd2 before and obviously had some probs with codes.
Now i plugged the p28 ecu in (used an obd2 to obd1 harness for this) and ran the engine.

Engine gave me codes 22 and 41.
22 for VTpressure and 41 fro o2 heater.

My engine didnt wanna rev over 5000.
I fixed my code 22 by taping the VTp to the VTsolenoid. Code went away.
Still engine doesnt rev over 5000.
The o2 sensor thing shouldnt be the culprit either .. sure of that.

What do you guys think?
If i stick the obd2 ecu back, It revs ok.