I have a '00 B18 on my '94 del sol, I'm having trouble, the car is guzzlling gas llike crazy less than 15 miles an gallon. The check engine light is telling me that is the MAP sensor, but I put on a different one, and is still giving the same problem. So my question is do I need an obd1 harness or obd2. Any other help will be appreciated.

 

an obd2 harness will not even work on that car without some major wiring. the obd 1 is good for it. its not your harness causing problems.... thats for sure

 

you should have used the harness that came off of your car.

 

So if its not the harness wiring, what could it be, the ECU?

 

could be anything. either you can spend alot of money replacing parts to see if you got the right one, giving it a good tune up, or you can take it to a good shop that can diagnose that kind of thing