91 Accord H22A Swap help?!

[91accordh22a]

I have a 91 Accord with an H22a and I cant get it to run well no matter what I do. I swapped out the ECU for a P28 equivalent because the regular P13 was all corroded and fried out. The closest thing I can compare how it runs now is that it sounds like a lawnmower and it runs very rich. When the P13 fried out, I thought it ran out of gas (This was a day after I bought it and I had no clue if the fuel gauge was working or not) and my friend filled up the gas can with unleaded instead of premium. I don't think that would make the car run rich or anything like that. I have replaced the dizzy cap and rotor. I'm at a loss right now and I don't know where to begin looking for this problem. Anyone have any ideas to fix this?

 

[GlassHeadlights]

Get the correct ECU for that motor. If you have any codes, fix them. Make sure your firing order is correct and the timing is set.

 

[91accordh22a]

well the ecu i bought was made for my motor. i have 3 different chips for it, two throw codes and one doesnt. and could someone tell me the correct firing order? google wont give me a straight up answer.

 

[GlassHeadlights]

1-3-4-2. This took me 10 seconds to look up.

 

[91accordh22a]

Yeah, I tried that firing order... funny story actually. A cop came down the driveway because he thought my friends and I were burning leaves, as he was walking up the driveway I tried to start my car with this firing order and a HUGE backfire erupted from my car and the cop almost pulled his gun on me... If that is the correct firing order, why would that happen?