Luke G.

N00B question: i'll be swapping a b18c1 from a 94 or 95 gsr into my 1993 civic cx hatchback. Ive found alot on wiring in vtec, but do i need to do it, or is my car already wired for it?

T3KNiQe

I think only the 92 cx is pre wired to the firewall for vtec,

someone correct me if I'm wrong

Unseen Racer

just get the entire wiring harness and the ecu for the b18c1. then your good to go

boostedcivicsir

beat me to it.

my friends 92 dx was, my friends del sol is, only thing you will need to wire is knock and IAB. but here is the catch. it isnt on the engine harness, but it is from the strut tower to the ecu.

longshot

my 92 dx has it prewired

Ya Digg

Also have to wire a 4 wire o2 sensor.

GSR-EG-92

Ok guys, all 1992 models HAVE vtec wired. After 92 only the Si model has vtec wired.

1992= all
93-95=only Si

94EG8

You're mostly right, but you forgot the EX coupes and sedans, as well as the VX hatchbacks.

Luke G.

alright, so my car doesnt have it. "Unseen Racer" says there is a wiring harness i can buy, is it worth buying the whole harness or just wiring it yourself?

POE

its just 2 wires u need to add. i would just by some wire and install it my self...

94EG8

you can wire it yourself pretty easily. Normally I go to the junkyard and remove the 2 wires from a '92 civic thats prewired for vtec.

slo_hatch

i got a subharness when i swapped my d16z6 into my 1993 cx hatch...here is the link. this one is actually for your gsr into a cx hatch...here you go. lol

http://rywire.com/store/9295-civic-s...4ad2ec15436d9b

Luke G.

thanks for the link, i mean that would be pretty easy just to plug in and go, but if its not to difficult i'll probably just wire it myself. Thanks for all the help, i really appreciate it.

GSR-EG-92

hmm there may be something to do with me being Canadian here. I dont think we have the EX, not sure about the VX

94EG8

We do, but here in Canada our stuff was labled a bit differently.

Canadian EX-V sedan -> US EX sedan
Canadian EX sedan -> US LX sedan
Canadian LX SE sedan -> N/A
Canadian LX sedan -> US DX sedan

Canadian Si coupe -> US EX coupe
Canadian DX special edition coupe -> N/A
Canadian DX coupe -> US DX coupe

Canadian Si hatchback -> US Si hatchback
Canadian VX hatchback -> US VX hatchback (49 state)
Canadian DX hatchback -> US DX hatchback
Canadian CX hatchback (D15B7) -> N/A
N/A -> US CX hatchback

Luke G.

so if i do go with the harness, is this one all that i will need?

iliv2xlr8

This and other good info is found here: http://www.phearable.net/tech/

Luke G.

thanks for the diagrams, but i really dont know what im supposed to do after reading those. does anyone know what exactly i will have to buy? i will be running a P72 obd1 ecu, this is the link to the swap i am buying:
http://www.hmotorsonline.com/shop/sc...age&item=30009

jdmeg6rsk

U dnt have 2 buy anything just get wires and cut and sadder back together or tape...the diagram shows everything..if your doing the p72 ecu i would highly recommend the knock sensor it adds a good 10hp...and get the butterfly's to work it would be real strong..

T3KNiQe

Make sure you get the LSD with that tranny its soOoOoOoOoOoOoOoOoOoOoOoOoOoOoOoOoOoOoOoOoOoOoOoOo OoOoOoOoOoOoOo worth the money.

Or you'll be kicking your self in the a$$ for ever for not getting it.........after everything is bought/done/swapped.......

95civiccpdx

ok so i have a 92 dx how can i tell if its wired for vtec just look too see if a4 and d6 have wires in them?? im using a p28 so i have no knock but do i still have to wire iab

arrocha87

all 92 civics are prewired for vtec...

miguel329

if that motor is jdm, i thought you can use the engine harness since firewall opisite sides? just figured id add that in case he runs into that...im pretty sure someone told me that

Luke G.

can anyone explain to me what i am supposed to do? those diagrams are crammed with so much info its hard to follow, this cant be that difficult , i just need someone that knows what they are doing or have done this before to explain this to me.

hondafreak95

i have a 95 civic ex but i have a b18a1(ls) in it right now, but i want to go ls/v so will i just have to wire from the engine to the shock tower connector?? thanks in advance