Pman92

I have a fully built h23 in my 92 prelude. Im running stock ecu plus stock injectors to get the fluids running through the car, new build. Finally got it to idle correct but throwing a code of 03-1 map sensor imput low. Im using the 3 bar gm sensor and car is running really rich at idle. At least this is what the wide band is showing. My friend disconnected some wires to scan code with obd1 scanner and now car will start idle to 3k then die. He told me he didnt hook the wires back up that he took apart to scan code with. Could this be the problem car will not idle now and also is it the 3 bar map the reason im running so rich at idle. Any help would be appreciated.

Pat