Ok so im doing a ef, gsr swap trying to find a jumper harness for it,
well as I was on my way of doing that. I ran across a guy
selling a PR3 ecu.

The ecu's for a jdm b16,

Did they come with vtec?
Can I just plug it right up?
Do I still need to redo the wiring or is it a plug and play thing?
Will I have any problems running a jdm ecu?

And is there any way of checking the ecu. (ive heard that you can
run the car without the ecu, so hooking it up and turning the car on
would be out of the question im guessing.

So what do you guys think?
Would this be a good idea, or should I just find the jumper harness
and get the P72 ecu?

 

hey i think you can run it if you have a type r intake manifold to eliminate the secondary butterfly

 

i don't think you can because of the butterfly in the intake manifold the pr3 will not open it up and you will lose major power because of it. anyone correct me if i'm wrong.

 

Yes the b16 obviously came with vtec. It will plug right into your stock harness. You will just need to add the extra wires for vtec/knock sensor/ o2 sensor. Your swap will run fine. I am currently running that exact set up in my car. There is no way the car will run without an ecu. A way you can check it to see if the ecu works is to just straight up swap the ecu into your car if its an Si or wired for multi point. The car should run, although it will not run well and you will get a check engine light but the fact that the car is running will be the indication that the ecu is functional. I have been running a GSR with a pr3 for over two years now and have not had a single problem with it.

EDIT: I am running a skunk 2 intake mani so i dont have the secondaries. Those cant be hooked up with the pr3. But other than that it should be the same as a b16 swap.

 

whats the butterfly? what are you guys talking about. Sorry im just not sure.

And what about the PW0 ecu? Would that one work out? Which one would be better?

Which setup would you guys recommend, the P72 with the jumper harness, or the
P32 ecu? and have to wire up extra wires in the stock ecu.

 

The butterflies that we are talking about are in the intake manifold. The gsr has a dual runner intake manifold and there are butterflies that open/close at a set rpm to help increase low end power when needed and top end power when needed. A PWO would be pretty much the same thing as a PR3. It's really up to you on the setup you would like to run. If you want to spend the extra cash then you can go right ahead and get a jumper harness and ecu. Just remember that when going from OBD 0 to OBD 1 that the Distributor and O2 sensors are different and you must use the equivalent ones. So if you currently have a full OBD 1 swap then I would recommend just getting the jumper harness for simplicity's sake.

 

So i cant use the obd1 distributor, and the sensors?
I have an obd 1 gsr, with all the senors and parts to it.

So running the PR3 would not be ideal for me?
Im just trying to find the best esesiest way to get this done.

Oh and the ecu's chipped with a mugen chip.

 

sell the pr3 for like 100-150 on ebay, use that money towards rywire harness and the p72

youll also be needing a 4 wire o2 sensor if you go that route. i dont know if you had a header come with your swap, if you did, great.

 

If you use a PR3 or PWO you must keep it OBD 0. Which means you need an OBD 0 distributor and O2 sensor. Seeing as you already have the whole OB1 swap and an ecu that chipped i would just get a jumper harness so you wouldnt have to source the other parts.

 

well I dont have the obd1 ecu. Well I do have one but its not the right one for the swap, its for a sohc vtec.

So which way is more recommended? Is obd1 better than running obd0 vtec?

I do have all the sensors, distributor, and the wiring for the sensors. (obd-1)

I hope im not getting my self into a bigger mess.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by russianswty &raquo;</TD></TR><TR><TD CLASS="quote">well I dont have the obd1 ecu. Well I do have one but its not the right one for the swap, its for a sohc vtec.

So which way is more recommended? Is obd1 better than running obd0 vtec?

I do have all the sensors, distributor, and the wiring for the sensors. (obd-1)

I hope im not getting my self into a bigger mess.</TD></TR></TABLE>

your not dont worry.

its less work to go obd1 in the long run. if you get a good jumper harness its plug and play, and the extra wires are clearly labeled.

its childs play at that point.

isnt it possible to modify any obd1 vtec ecu to run a b18c?

whats the code on that ecu you have, p28 by any chance?

you can send those out to be modified.