Hi fellow Honda-techers.

Thiskinda problem came to my head today. I'm doing this B18C4 (B18C1 in US) swap and i've thought about the immoblitzer problem.

I'm gonna run this B18C4 swap with S9B tranny, hasport mounts and rywire wiring. I orginally planned to run the engine with its own ecu, immoblitzer and OBD2a.

The other plan was to convert the engine to OBD-1 and use "older" P72 ecu. Possilbly from non- immoblitzer OBD-1 Integra GSR (B18C1). And ofcourse use the PM7 harness with rywire swap conversion.

The question would be; how i can get the engine run nicely with OBD-2, immoblitzer and PM7 harness with rywire swap conversion?
And to the other plan, can i techically get the US spec B18C1 ECU work on the B18C4, and what i should need to know?
Or witch way would be easier/ better to use?

And if you can tell me everything what i need to know if i'm going to hassle with OBD-2 and immoblitzer. For example, what i would need from the donor car and stuff?

And lastly, give me opinion how you would do/ have done this swap.


Thank you


Modified by Twilight at 11:28 PM 1/3/2006

 

Bumpidybumpidybump!

 

First off, you'll have trouble fitting that gearbox. You'll need to do some fairly drastic denting on the passenger side frame. I'm not a big fan of that.
Also the S9b gearbox is too tall for my taste.

I'd reccomend using a B16A2 Y2 hydro gearbox with an aftermarket LSD instead.
However I'm perfectly happy with my Y1 cable tranny on my B18C4.

If it's OBD2, leave it alone. It's going to be too much of a hassle to get the electronics to work properly.

You want to use any OBD1 ecu, and chip it. I'm running a P30 with a street tune for my B18. I can burn you a chip if you'd like.
In this case you'll need to use an aftermarket vtec controller, or a shift light to drive your IAB's.
You -could- hook them up to your vtec... but they're supposed to open before that. (3300Rpm or so)
Or have that ECU converted to drive the IAB's.

Take the wiring harness off the engine. I converted my entire engine bay to use the stock B18C4 harness.
Just because I think that was the best way to figure out what goes where. Also, that engine harness was alot newer and in better condition than any 15 year old B16 harness. I felt bad cutting it up.

However, if hardcore modification isn't your thing, I suggest using a B16 harness instead. You'll need to extend a few wires, and add the IAB, possibly knock sensors. You'll need to modify the injector plugs, wich you'll have to take off your B18 harness.

Or you can have Rywire do that for you.

Snag the engine and everything attached.
-injectors/fuelrail
-wiring harness
-dizzy

Get the axles. They're nice and new. (Don't forget the intermediate shaft!)
You could try the gearbox...or not.

I'd leave the ECU. Too much work for what it's worth to get it to work. OBD2 sucks anyway. Too many restrictions and inhibitations.

 

Okay. So im turning bit by bit to the Y2 tranny then.

That would be very awesome setup. What about the Y2 common prices in Europe?

Yup, OBD2 is nearly forgotten.

Yeah, that was the thing we talked about yesterday. How about the reliability on chipped ecu? What to do in case of errors or malfunctions? Otherwise, i would love to make that happen.
So i would need something to control the IAB's, hmm.
What about if i use normal intake manifold on this one. I've heard that i can make pretty nice results if using C5 (/6,7) manifold type, like skunk2 or variative? Would i make loss of power if using B16's manifold?

So i'll take a B18C engine harness completeley. Lets find the best way to wire it.

Hardcore modification is my thing. ... i wouldnt say hardcore. The re- installation of plugs isint a problem, but i thought i stay with 16v harness because otherwise its pretty similiar to B16's. Just no vtec components + wires.

What rywire can offer for me?

I got ya mate.

I'll take the axels if they are in good condition. Btw, do these fit to Y2 tranny and VT hubs? But i wont take the gearbox, since its pretty expensive.

I forget the ECU.

Thanks for the answer bro. Come home now, so we can talk about swaptech. :D

Anyone else want to comment?

 

I'm not sure on prices of a gearbox. You might want to ask Dave if he can get one, or try something local.

Reliability is no issue with chipped ECU's. Mine's been running strong for a couple of months now. All errors were non-ecu related.

I think the B18C4 axles will work fine with the Y2 gearbox. The difference lies in the intermediate shafts across the engines.
AFAIK you're set with the axles. But you might want to verify that.

 

What about the wiring. What i should buy from the Rywire?

OBD-0 to OBD-1 ECU Jumper? I think thats what i need, at least. What else?

 

Bump it up.

 

Ryan should be able to fab something up...

You should just PM him instead.

 

I could get one OBD-1 P72 GSR Ecu. Do you guys know how that would run with my motor?
Is there some extra components on B18C1 compared to EDM or JDM motor? Cuz i dont want to have extra codes for not having some sensor or component?

Thanks for the input