is it possible to make a obd1 engine obd0?? obd 1 is too much hassle from what ive found thanx n advance

 

btw is there a vtec ecu that is obd0?? im runnin the jdm d15b

 

oh man. why? going obd1 with an obd1 engine would be the "right" thing to do.

it really isnt that hard. i bet there are 5 times as many obd0-1 conversion tutorials as there are obd1-0 tutorials..

OBD-1 is superior in every way.. you should use it. Besides, in california, you cant do it legally without converting to obd1.

 

yes.. the PW0 and the pr3. its not worth it.. just get a chipped p28 or p06/p08 converted to run vtec with a obd0-1 jumper harness, distributor adapter, and o2 harness. if your car is already mpfi, then the whole thing is plug and play.

then your car will run like stock and you wont have to do the wiring to get a chipped pm6 to run vtec through the a/c line, which is a major headache and not worth it.

 

i was looking at all the jumpers and seen all the wires and got scared i guess lol. i used the search and couldnt find a really strong tutorial on it

 

i did obd1 to obd0 in my wagon with a 92 LS integra motor.
resistor box, and different ECU is what was done to change back i believe.

 

what if i use a obd0 intake manifold and a obd1 distributor

 

that shouldnt matter at all

 

allright ill try it and find out ma self

 

you can't use the OBD1 distributor with OBD0 ECU

 

if you use an obd1 distributor, you need to use an obd1 computer.

The injectors can be swapped between the manifolds.. they are not unique aside from their internal resistance. If you use the obd 0 injectors, you need the resistor box. if you use the obd1 injectors, then you do not need the resistor box. The injectors can swap between either of the manifolds without issue, but the injector clips are different and will not be compatible with your otherwise obd0 engine harness.

here is the deal, i know you pretty much arent listening to me, but i am trying to tell you that you should go 0bd1 or bust, if you are running an obd1 engine. it isnt worth it to try and run some messed up combination of the 2, or trying to stick with obd0 and make vtec work. it is more headache than it is worth.

 

oh yes i am listening. wiring the obd1 injectors into the modified dual point harness is what confuses me. one diagram shows me how to run it to the inj. resistor box, another shows me how to delete the box to run the obd1 injectors. i just wana do it the easy way

 

Let me get this right. You have a jdm d15b vtec engine and you would like to put it in your civic/crx which is dpfi.

You don't want to install the dpfi manifold on the d15b. It will be a waste of an enigne.

Sounds like you already have an OBD1 distributor. I'm assuming you have the intake manifold and injectors on the d15b. All you need is a 4wire O2 sensor, OBD0-OBD1 jumper harness and an ECU. The wiring isn't really that hard just look at what has to be done. You will need to wire the injectors without the resistor box because the d15b vtec injectors are not the low impedence injectors(low impedence=OBD0=resistor box).

Hope this helps you out.

 

this is the best site for converting dpfi-mpfi.. read it.. it is very simple, step by step.

http://www.angelfire.com/d20/hcivic88/dx-siwiring.html

There is no easy way. the easy way is to take it somewhere and have them do it for you and pay for it. if you can't afford that, i know i cant, then you just have to choose a weekend or week to take your car down, have all the supplies you need, and just go slow and do it right.

 

OBD1 all the way! Well worth the effort. Just sounds alot harder then it really is espically with all the adapter harnesses.

 

but if i have to use the obd1 or vtec injectors like sgallagher said^
how would i delete iw would b a whole diffrent process then angel fire has listed right?

 

ok just my two cents but i have 90 sedan wich i put a d15b in. Then went from obdo to obd1 because its easier to tune and work with. why would you want to go down a step it doesnt make sense??

 

sghalleger may not know that you can use obd0 injectors with an obd1 computer. you just have to use a resistor box. if you use obd1 injectors, you don't need the resitor box because the injectors are already high impedance.

you have to do the wiring for 4 injectors anyway, so you might as well follow the method from the page i linked, and just use obd0 injectors.

for your case, it boils down to what you can get cheaper. if you can get obd1 injectors with clips for cheaper than obd0, then go for it.

 

Believe me I know what i'm talking about. The reason I suggested wiring to the OBD1 injectors is because he has a dpfi car so he doesn't have OBD0 injectors. He has OBD 1 injectors on the d15b manifold so all he needs is clips and to wire it up.

 

gotcha.. sorry.. i had that realization as well writing the last post.

 

allright thanks for the input i finised it the way angelfire.com had it and it runs perfect i just need to wire vtec and im done thanks