Sproket

I have a 94 jdm h22a swap. 310 cc injectors with resistor box.

Need to pass emissions.

Have a p13-a12 to pass emissions.

Which injectors do I need to use with p13-a12? 290cc high impedence or can I use my 310cc low impedence?

Dont want to burn out the ecu driver.

Thanks

Apex1972

I think you can use either ones but you have to make sure if you run the 290s not to use the resistor box. As long as you dont hook up the 310s without the box youll be fine.

holmesnmanny

That is an obd2 ecu. To use that ecu you will need high impedance injector(11 - 13 ohms) and delete the resistor box. Assuming that your car is still obd1 you will need to convert a lot of stuff. Also, if that's not a '96 ecu(97-01) then you will need to figure out how to get around the immobilizer.

Or you can go the easy route and get an obd1 ecu which is either A10 A11 L10 or L11. Then you won't need to wire out the resistor box. This will require low impedance injectors.(2-3 ohms)

Sproket

The motor in car is h22a obd1 but need to convert to obd2 for emissions.

I have 96 p13-a12 ecu obd2 to pass emissions. This ecu has no immobilizer.

So I need to get 290cc obd2 high impedence injectors bypass resistor box.

Just verifying that to use this p13-a12 96 prelude ecu.

I have a couple of obd1 ecu's but emissions wants to be able to read from obd port. They failed me bc of it.

Im gonna hit the junkyards tomorrow to search for fuel rail with prelude obd2 injectors 97-01.

Cross my fingers.

holmesnmanny

What state are you in and what shell are you using ? It's going to be hard to find a rail from a 97-01 as those are the first engines to get pulled but good luck.

v4lu3s

the p13-a12 uses the low resistance injectors (310cc) with a resistor box.
http://www.hondapartsnow.com/Page_Pr...7830%201242930

Sproket

Thats what has confused me and why I posted about this 96 prelude ecu.

The place I bought the ecu from keeps telling me to use 290cc, no resistor box for this ecu b/c its obd2 but when I called honda and we looked up the injectors they said low ohms for 96 prelude injectors so I was confused.

The post by v4lu3s is confirming what honda said.

Now I see 96 lude is OBD2, But uses the same injector resistor box as the 93 thru 95. Thats what I already have installed. I guess this p13-a12 is a hybrid ecu using low impedence injectors and resistor box. I looked up parts for 92-95 prelude injectors and its the same for 96 prelude (06164-P0F-000)

http://www.hondapartsnow.com/Page_Pr...ndImageID=7922 1243016

WTF, why was this place I got the ecu from telling to use 290cc 97-01 injectors and no resistor box.
Thanks v4lu3s , what a goose chase they sent me on.

v4lu3s

the 1996 p13 is a screwball ecu, it is an obd1 ecu with obd2 plugs, and second o2 sensor added. its also a very good one to have if you have emissions to pass. a lot of people are just not aware of the difference. the only reason i knew for sure was that i used a 1996 prelude engine for a swap into an obd1 civic a while back.

holmesnmanny

That's my bad. v4l is right. The '96 is the only obd2 h22 ecu that still uses the low impedance injectors with the resistor box. Sorry bout that. The good news is you don't have to mess with the resistor box. The bad news is you need obd1 injectors.