Tad

ok i'm swapping in my d15b(as some may know cuz i've posted a billion questions already, hah).

Now i'm noticing that there are a few busted sensors n stuff on the d15b thats going in, and the wiring harness is cut.

so i'm going to have to reuse the cx harness of course,
and add some vtec wiring.

My question is what can I reuse from the CX on the d15b??
i'll be running a jdm p08 auto ecu, converted to 5spd.

the d15b map sensor is busted, and I saw one or two sensor looking things on the back that are busted(not sure exactly what each is, is there an easy chart someone that will tell me what is what back there? like what each sensor is.. solonoids.. random electrical THINGIES, etc?)
I do have a helms, but its a bitch to find things like that in there.

SO can I replace the busted stuff on the d15b with its counterpart(assuming it has a counterpart) from the CX ??

Thanks!
OH and for VTEC wiring,
I know I have to run the wires for the ground, vtec oil pressure, and vtec solonoid,
and what pins on the plug they have to go into(its a 92 so half the wiring is there).
BUT i'm not sure exactly which wire on the vtec oil pressure(sensor??) or solonoid I need to run..
or are they just one wire each? If so where is the vtec oil pressure at?? the solonoid is ez to spot.

these are things that do not come up in searches.

thanks a bunch.

Tad

bump
need to know,
thanks.

Tad

please!
i'm swapping right now!

B_CRUZ!

:::::stolen from Katman:::::

most of the sensors can be swapped over. just look and see if they are somewhat similar.

if your distributer is busted from teh J-spec one, transfer all of your old dizzy gots over.

0ptimus prime

You can use most if not all of the sensors off of the CX. You can use the Map sensor (on top of throttle body.) You can use the TPS sensor (behind throttle body.) You can use the Intake Air Temperature sensor (white sensor behind the intake manifold) and even the O2 sensor off of the CX. You can reuse the CX wiring harness (since you're running single wire O2 with P08 ECU anyway.) With this, the only things you'll have to do is add vtec, oil pressure, and ground.

jdmsiR20

yeah that second pic posted by B CRUZ (courtesy of katman) has all the info for VTEC. when looking directly at the VTEC solenoid, there will be three wires.

1. the wire coming directly from the solenoid (round thingy) goes to the orange/white wire on the plug.
2. many JDM motors did not come with a VTEC pressure switch, so here's what you do. plug the hole up with a 14mm or 12mm bolt (not sure at the moment). then you take the orange/blue wire and splice it with the orange/white.... either at the shock tower, or in front of the ecu.


edited... i accounted for only two of the three wires for VTEC... (VTEC pressure, VTEC solenoid)... i forgot the ground wire. the ground wire is right next to the VTEC pressure wire, on the switch. what to do, where to wire? dont. its done. wire up the solenoid, tap the pressure to the solenoid, and you're done. my setup ran flawlessly for months, this is how you do it. have fun!

i did it in front of the ecu, just to make things cleaner. i got evidence for this too, its been done numerous times.

facts:https://honda-tech.com/zerothread?id=686379

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VTECVillain &raquo;</TD></TR><TR><TD CLASS="quote">

The way to use the JDM VTEC solenoid with a USDM ECU or any ECU that looks for a VTEC pressure switch is to run the wire from D6 (VTEC Pressure Switch) and tap it into A4 (VTEC Solenoid). This connects the pressure switch and VTEC solenoid circuit together which fools the ECU so it won't throw a CEL.
The first setup that I wired this way was a friend's car (95 DX with 98 JDM B18C + JRSC). It has been running flawlessly for nearly 2 years and sees it's fair share of abuse. There have be no side effects from this that I have seen nor have I ever heard anyone else that has had problems.</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BauleyCivic &raquo;</TD></TR><TR><TD CLASS="quote">

vtec pressure switch


ecu pinouts

</TD></TR></TABLE>


Modified by jdmsiR20 at 5:41 PM 6/29/2004

Tad

thanks so much!
you all came through 4 me

SO
I went out and checked,
and my vtec solonoid has no pressure switch,
and only one wire, comming directly out of the solonoids big cylinder.
I have a jdm P08 ecu(at converted to 5spd) so does that mean it'll work perfect??

what about that ground wire? wheres that at??

also Im still not 100% on how to connect the wire to the oem plug.
i have to salvage the pins outta another plug?
can it be any plug? there are a few(like dizzy plugs) on the d15b that I wont be usin and are intact.
Kinda wierd tho, the pieces needed are female ends.. not the pins.

SuperDuude

Hey dude,
The D15B you got, is it VTEC? If it is, shouldn't you be running P07 ECU? P08 is a none VTEC ECU...
I am looking to do this swap also and my P07 ECU is on the way.

Tad

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SuperDuude &raquo;</TD></TR><TR><TD CLASS="quote">Hey dude,
The D15B you got, is it VTEC? If it is, shouldn't you be running P07 ECU? P08 is a none VTEC ECU...
I am looking to do this swap also and my P07 ECU is on the way.</TD></TR></TABLE>

ooh, sorry to break it to you man.
the p07 is from a 92-95 VX, with vtec-E
not what you want for a sohc vtec platform,
a p08 is what the d15b vtec originally used(from the civic vti in japan).
you could also use a p28, which is from the d16z6(si/ex 92-95)
fuel maps are slightly different, and the p08 uses a 1wire o2 while the p28 uses a 4wire.

SuperDuude

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tad &raquo;</TD></TR><TR><TD CLASS="quote">

ooh, sorry to break it to you man.
the p07 is from a 92-95 VX, with vtec-E
not what you want for a sohc vtec platform,
a p08 is what the d15b vtec originally used(from the civic vti in japan).
you could also use a p28, which is from the d16z6(si/ex 92-95)
fuel maps are slightly different, and the p08 uses a 1wire o2 while the p28 uses a 4wire.</TD></TR></TABLE>

o damn, didn't know that. but all them specs on ECUs, P08 comes out to be a none VTEC ECu does that mean I have to get a VTEC controller if I run a P08?

FERIOkid

i'm hitting up a p28 with this swap..is any of the info different.

Tad

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SuperDuude &raquo;</TD></TR><TR><TD CLASS="quote">o damn, didn't know that. but all them specs on ECUs, P08 comes out to be a none VTEC ECu does that mean I have to get a VTEC controller if I run a P08?</TD></TR></TABLE>
no a p08 is a vtec ecu
what specs are you looking at?

its just like a p28, except it runs slightly richer fuel maps,
and 1wire 02, and i guess it has the vtec oil pressure built in(thats new info to me i just found out in this post).
basically the p08 is optimized to run the d15b VTEC, and the p28 is optimized to run the d16z6. both similar motors, both sohc VTEC

Tad

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slowdx9585 &raquo;</TD></TR><TR><TD CLASS="quote">i'm hitting up a p28 with this swap..is any of the info different. </TD></TR></TABLE>

do what jdmSIR said about the wiring for the vtec oil pressure switch,
if u have no switch you'll need to splice its wire with the vtec solenoids wire, cuz the p28 wants to see that switch.

also u'll want to get a 4wire o2 if u dont have 1 already...

FERIOkid

spanks

SuperDuude

Thanx dude