Crossroads of engine management Ok I have run into a road block on my motor swap. here is the situation I have a 5 speed 95 del sol with a d15. I have a US spec b18b1 complete swap(5 speed) with the wiring harness still attached and the stock ECU. I found out I can use the obd2 harness as the tower plugs are the same so nothing is cut and the six plugs are all in tact. I bought an ecu I was told was for a 94 integra LS 5 speed and the code is p75-a51. I took the man at his word then found out the A51 designates it as an Automatic ECU. So at this point I have 2 ecus and dont want to buy yet a 3rd. So to me I have two options. maybe I am missing some other option you guys can give me 1 buy hondata the obd1 auto ecu and plug n play which with install and tune is about ($900.00) bucks but this would allow me to boost later when I get to that point 2 buy an ecu jumper harness($125.00) in my car to run the us obd2 ecu that came with the motor. I feel like I could then plug n play but that I would need to install a second 02 sensor for the ecu. I was also reading about the CKP sensor and was not sure if I would have to wire for that(i know its on the car but would the pinout be in the right place after the obd2 to obd1 back to obd2 conversion?