Project92Hatch

Ok my friend is putting a 98 gsr motor in his car he has a obd-1 p72 ecu and distribitor in his car and he's doing the swap this weekend. He was wondering how do you hook up the secondary butterfly he has no idea. since he has a 94 gsr ecu does he not have to hook up anythin or does he need to run wires so it activates? if so how do we do this? i no he can buy a skunk2 mani but he doesnt have the money to do it so e has to do this. thanks

Project92Hatch

00WhiteEKy

ok, i have a 99 gsr motor. Im using a obd-1 ecu. didn't need a different dist. but I heard that you just have to switch a20 to a17. and then cut the black wire on the IAB selenoid and give it a 12v switched source. you can tap into any 12 volt switched sorce. and 12v switched source is a yellow/black wire.(and remember, your giving the black wire from the IAB plug the 12 v switched source, not the black wire from the harness)
I heard that is what you do, i heard that is worked with some poeple, but it did not work with me. I did everything right, im just confused. If you have it right, you will see the secondaries suck close when you start the car.

43MA

almost right
take the red wire off iab plug and connect it to A17 on ecu

Project92Hatch

Ok thanks, Can you be alittle more detailed about this Steady Im not the best with this wiring part. So I just take the red wire which is the iab plug and do I splice into it and run a wire to pin A17. Or do I cut it and run it directly to the ecu and leave the other side of the red wire not connected or should I take the whole wire out of the plug and just run it to pin A17? thanks


[Modified by Project92Hatch, 7:42 PM 3/26/2003]

43MA

there are many ways to do this

but what i did was take a wire and extend the red wire on the iab plug and run it to A17 on the harness.

i did this because i'm not really too sure where the iab wire is on the engine harness side

00WhiteEKy

well, i just took a tester and tested the wires, and i found that my stock 92 civic VX plug has the wire from the IAB on the gsr in plug a20. i just moved a20 to a17.but mine doesn't work. i ran a seperate wire to the IAB and wired it into a17, but to no luck. i gotta keep looking into this.

See Are X

i just finished wiring up my IABs a couple days ago...

the IAB plug has 2 wires...i dont know the exact colors because I am using a different plug for the IAB valve...but...one wire goes to A17, and the other goes to a 12V source(I just tapped into A25 for the 12V source, and yellow/black wire is a 12V)

Project92Hatch

Ok I have a problem! There is another post about doing a gsr swap and There was like a canister the guy was holding. And another guy said that on top of the canistr was the AIB solenoid. Here is the pic
Ok now Do I need this canister and solenoid in his hand to beable to hook up the AIB for the second butterflies? And also how do you no if its hook up and working? Is it supposed to close when the car starts? Any body have a picture of what is supposed to close? thanks

00WhiteEKy

that is NOT the IAB!!! thats just the carcoal canister. he posted it wrong. i remember reading that post, look down the page a little more and the guy said he messed up, it not the IAB. the IAB is the bottle under your intake. And that canister is the gsr canister, the civic canister isn't electronic.

Vic Nyce

oh man im in the exact same predicament. VTEC is all wired up, now just need to get the secondaries wired. im also a rook at this.

can someone please post pics of the IAB. thanks to See Are X i know where to wire A17 [IAB Solenoid], but have no idea what to look for. also where do i run A20 [EVAP Purge Solenoid] to?

i got those pin locations from the OBD1 Wiring Schematics produced by Katman (good job man ).

eg6ajk

Evap is not necessary, I usually repin/switch A20 wire to A17, this way its much simpler.

Knock Sensor Red/Blue D3

Evap Purge Power Yellow/Black 12V power
Evap Purge Solenoid Red A20

Secondary Intake Solenoid Pink/Blue A17

Vic Nyce

ok so i dont need five wires as shown in this diagram?

https://honda-tech.com/zerothread?id=462306
in this thread it says that my car (95 LS) should already have the IAB wire run. with that said, all i need to do is relocate the wire now in A20 into A17? also, what does the IAB look like??

OT. i checked out ur website. good stuff

Project92Hatch

So do I have to wire this now to the Evap? Or is this for 5g civic only? Cuz for a 92 integra i thought you only did the three vtec wires buttfly knock and o2?


[Modified by Project92Hatch, 7:24 PM 4/6/2003]

43MA

i just left it unpluged
runs fine without it
its just for emissions reasons

Fuster_Cluck

I am getting confused with all the different answers on how to wire this up.

Is this one complete way or must some other wires be addd / cut as well:

Seems easy here:

"there are many ways to do this
but what i did was take a wire and extend the red wire on the iab plug and run it to A17 on the harness.

i did this because i'm not really too sure where the iab wire is on the engine harness side"

More work / didn't even work:

"but I heard that you just have to switch a20 to a17. and then cut the black wire on the IAB selenoid and give it a 12v switched source. you can tap into any 12 volt switched sorce. and 12v switched source is a yellow/black wire.(and remember, your giving the black wire from the IAB plug the 12 v switched source, not the black wire from the harness)"

When you guys say "secondary butterflies", is that just referring to the IAB solenoid and it's wiring?

Fuster_Cluck

Pic says it all




[Modified by Hybrid93Hatch, 11:18 AM 4/7/2003]

Fuster_Cluck

Good $hit! Found it
Focker is well hidden beneath the manifold. There are 2 wires coming out the harness and one is pink / blue as you stated. I just took some pics while I was out there and will post for you all tonight or in the morning. I really have to get going for work.


ADDED PIc is above in reply. I couldn't leave you guys hanging until tommorrow.



[Modified by Hybrid93Hatch, 11:19 AM 4/7/2003]

hatchboy93

this topic is great. but i am confused once again.... if u are running a gsr motor then u have to run the evap purge solenoid, and if u ar running a b16 or jdm type r motor (b18c) then u dont hae to worry about the evap purge solenoid???? is this right??? the reason im asking is because sumone earlie mentioned that you only have to hook up evap purge solenoid if u need to pass emissions, well im in ga and i need to pass emissions can some one help me ????

Vic Nyce

hey hybrid93. thanks for the pic!! been lookin for that all week!

now what do u do, run the blue/pink wire to A17 on the ECU?


[Modified by Vic Nyce, 2:58 PM 4/7/2003]

43MA

yes

this is archive material

Fuster_Cluck

So far I have done:

vtec solenoid -- A4
vtec oil pressure sensor -- D6
knock sensor -- D3
secondary intake solenoid (IAB) -- A17
evap purge solenoid -- A20 (was already wired in the 93 Cx)

Have not done yet:

o2 wiring (I'm using a GSR cat. / plugging one of the o2's):

O2 Sensor Input - WHT to D14 (needs to be a shielded wire)
Heater Control - BLK to A6
Sensor Ground - GRN to D22
Sensor Voltage - BLK to A25 or B1

How do I know to go to A25 or B1 or does it not matter?

Is there any other wiring needed to be done? I want to get this all cleared up and go outside and knock it all out at one time. Even though the 4 up top are done already



[Modified by Hybrid93Hatch, 12:42 AM 4/8/2003]

Project92Hatch

I went to a shop to see if they could sell me a obd-1 p72 ecu. And they told me that what I could do instead of getting that ecu I could remove the butterfly all together and just bold the intake mani back up. They said yes I would lose tq. but I would gain alot of top end. Is this true? And they said after I do that I can just run a p61 or p28 ecu? This true?

Fuster_Cluck

I would just get the OBD1 p72 ECU ust to be on the safe side.

Vic Nyce

have u driven it yet? are ur secondaries and VTEC working properly?