Originally posted by blacklude97
well, because of obd2 it senses the problem and is trying to fix it , which is trying to make me run lean. with obd1 it will sense the problem and give me a cel , but it wont try to fix it.
this is not the case
i believe some of the only differences between OBD2 and OBD1 is the type of sensors and the way that the ecu displays troubleshooting information, as well as emissions control and what not
i know for a fact that an obd1 ecu will attempt to correct the mixture based on input from the O2 sensor (i drove my h22a1 around with h23a1 injectors for 2 months, and got an O2 code whenever i let it idle for too long or gave it less than full throttle during acceleration)
obd1 knock sensor is also a good example, on the h23a1 or h22a1 (same sensor) the engine will retard timing if it detects pre-detonation in the block. this is the main reason high compression honda engines have this sensor, so that the ecu can modify the timing to protect the engine.
~boomer