i'd like to change my obd2 ecu to an obd1 for various reasons (hondata down the road...speed limiter removed...no 2nd o2 sensor). are there any side-effects??? i removed my 2nd o2 sensor and my ecu is throwin that code. when i change the ecu with a conversion harness, will the light just go out? also, will i still be able to pass emmissions when i slap my cat back on? or is the obd2 required for that? thanks...