Dan_si_ej8

So I swapped in a b20v(converted to obd1) into my 99 ej8 and everything was going good untill someone stole my chipped and tuned ecu... ecu was a po6, now I went out and bought another po6 that came out of a different b20v... now my problem is that I know have a check engine light and it's throwing out 3 codes.. code 2-secondary o2 sensor, code 45 fuel metering system and code 5 map sensor.

I believe the o2 sensor code is because the chip inside the new ecu was some sort of obd2 b20v/b16 base map so it's now looking for the 02 sensor which my car has but I think ita done.
My old po6 was full obd1 so no o2 sensor..

Now i can't figure out why the new code 45 and 5 are from? Is it because this ecu was tuned for a completely different car/set up so now my fuel/air ratio is way off and im
runmimg rich?
Also the car is now running rough at idle, bounces from 5000-1000 rpm and when I drive it for a bit and come to a stop idle just drops to like 100-200 ish
also at first start black soot comes out exhaust

Any any help would be appreciated


thanks

ezone

The ECM is not set up for your engine. You're gonna have all sorts of issues until that's tuned to match your engine setup.