I just ordered a h22/auto swap for my sisters prelude and i got a jdm ecu for it to. I dont see a Vtec Oil Pressure Switch. Is this normal with a jdm motor and do i need the Vtec Oil Pressure Switch for the Vtec to work sence i have the jdm ecu?

 

yes it is normal for a jdm h22a to have no Oil Pressure Sensor, if you you have a jdm ecu for the motor than you are fine

 

Thanks... The JDM motor look's like it has 2 map sensor one on the TB and one on the end of the intake. i dont have a plug for the one on the TB with the wiring harness i have. I have i plug just dont know where to run them. Check my other post for pic of what i am talking about.

 

Obd2 vtec engines don't have a vtec oil pressure sensor, so if u're obd2 ur fine. Jdm h22's if they're obd1 though DO have an oil sensor.

 

Its a obd1.. So how do you fix it or bypass it??

 

Just, wire vtec plug everything up to the jdm ecu & see if it gives you CEL, If it needs it vtec won't kick in & you'll red line at 6500, instead of 8000rpm

If it gives you CEL for it you'll have to buy an oil pressure sensor & remove the bolt under the vtec solenoid & put it in there
Than wire it to the ecu & ground

 

I got the car running and no cel with it just sitting. but after i let it idle for a min it started flooding out and would not idle. The exhaust manifold was cut one inch befor the o2 sensor so i cut the stock manifold 1 in befor the o2 sensor and it just blowing on the o2 a little could this be why its flooding and want idle??

 

I saw this for the b18 would it work for the H22... https://honda-tech.com/zerothread?id=1693528

 

Yeah looks like their idea will work. And what do u mean ur exhaust manifold is cut b4 the o2 sensor? U running open header?

 

yea it open but the exhaust pipe is hanging half way on front of the headder. I use the H22 because it was a headder. they had cut it right befor the 02. The o2 is in the exhaust pipe not the headder.

 

If ur o2 is after the cat that could give u screwy readings, or are u just using a test pipe?

 

Hmm, my engine came without the switch, but I used a USDM ecu and just bought a sensor from Honda and connected the wires as they should have been.

 

Vtec works fine and did not have to wire up a pressure swith. I guess the jdm does not need it.

 

they cut the pipe but should have supplied you with a full 1. thats how they did mine. laser cut the exhaust pipe but had a full intact on the pallet with it. and mine came with the sensor

 

No big deal i have a welder i just took it off and welded it together.