I'm throwing this out there hoping someone had the same issue. I'm running a 1992 prelude si 5spd. I just swapped a h23a blue top with a t2t4 transmission. I used the top portion of my old im for the ivac. I used the od2 injectors with some clips and did a resistor box delete. The transmission is using the old vss sensor. The ecu is a chipped p28 from phearable.net. It has a h22 base map and it has the egr, knock sensor, o2 sensor and the vtec pressure switch deleted.

Now that some of the info is out of the why, on to the problem. The new ecu is running the car very well. I had one from ebay and it sucked. The car will not engage vtec and is giving me cel code 22 for vtec oil pressure switch malfunction. Vtec is pinned right to a4 and i have no clue what is going on. I shouldn't even have a code 22. The guys at phearable are being very helpful but there is only so much they can do with out the car in front of them. I tried jumping a4 and d6 after but all it does is give me code 36 and 22. As soon as I remove the jump, 36 goes away. Sorry for the long post, just trying to give people as much info as possible. Any ideas will be wonderful. Thanks

 

Obvious, ECU is looking for input from vtec oil pressure switch, they say that the pressure switch is deleted but your CEL says otherwise. Either get a different ECU preferably one you can actually toggle input from sensors like that or add the sensor. The other thing you seem to be getting confused with is the spool valve circuit that has the single grn/yel wire.

A4=Spool valve signal
D6=VTEC oil pressure switch

The pressure switch will have 2 wires, the other is just a ground.

I don't know if you have the sensor on the spool valve already but if so you should just hook the sensor up, I know some JDM engines don't have the sensor.

 

So I sent my ecu back to phearable to be tested and they say it tested fine. They had me open the ecu before I sent it out, and the did jump the a4 and d6 pin inside the ecu. So I still have a cel 22 for the oil pressure switch. I'm I forgetting to ground anything? Any ideas will be awesome.