[danny515]

Hey guys.

I'm trying to avoid some headaches.

Im new to Hondas, all my projects up til now have been older GM SB/bb and nitrous builds.

I have a z6 that I'm almost finished rebuilding for boost. It will be going into a 98 civic ex, which I now know is considered an ek.

The question I have is- what would be the easiest method of wiring as far as engine, distributor, alternator. I'm going to be utilizing a p28 hondata setup.

Use the y8 harness that is in the car and jumper harness for dist, and odb2/1 conv harness for ecu. I'm thinking this may be the easiest, as it won't require removal of the entire harness, and I could simply utilize existing iac, tps, etc wiring

Use the z6 harness and discard the y8 harness altogether, while utilizing z6 dist and alternator.
I'm not sure if there is other issues to be considered with either of these options.
I've seen a few different suggestions while reading through the forums, but they seem to be random and not specific enough.

Thanks guys, I'm hoping to enjoy joining the Honda community

 

[mattliston]

Easiest method if the chassis is already d16y8 manual, is to buy a distributor adapter harness to go to OBD1, and then use your OBD1 ecu plugs, and repin your current OBD2A harness with the OBD1 plugs. THe pins all fit, and it will be up to you to carefully get everything in the correct location. You WILL have leftovers, like the secondary O2, so dont get alarmed.

Then it is a plug and play affair


Use the extra wires leftover for anything you want to add in the future. Boost solenoid, extra coolant or oil sensors, wideband gauge setup, etc....

 

[danny515]

Easiest method if the chassis is already d16y8 manual, is to buy a distributor adapter harness to go to OBD1, and then use your OBD1 ecu plugs, and repin your current OBD2A harness with the OBD1 plugs. THe pins all fit, and it will be up to you to carefully get everything in the correct location. You WILL have leftovers, like the secondary O2, so dont get alarmed.

Then it is a plug and play affair


Use the extra wires leftover for anything you want to add in the future. Boost solenoid, extra coolant or oil sensors, wideband gauge setup, etc....

If the chassis is a y8 manual, and I need to use an obd1 dizzy on the z6, it would already be obd1.

Wouldnt it be easier to just jump the dizzy to OBD2, then use all OBD2 sensors and keep the original y8 harness? Then I would only need a conversion harness for the ecu.

 

[mattliston]

Flew way over your head.

OBD2A harness that is in the car right now......Now buy the adapter to plug directly into OBD1 distributor. THERE IS A DIFFERENCE!!! obd2a is 1996-98, obd2b is only 1999-2000

Drop d16z6 in the car.

Swap obd2a harness ecu plugs out for OBD1 ecu plugs, have spare wiring leftover from unused OBD2 stuff.

Like I said, it is

 

[dfb399]

Flew way over your head.

OBD2A harness that is in the car right now......Now buy the adapter to plug directly into OBD1 distributor. THERE IS A DIFFERENCE!!! obd2a is 1996-98, obd2b is only 1999-2000

Drop d16z6 in the car.

Swap obd2a harness ecu plugs out for OBD1 ecu plugs, have spare wiring leftover from unused OBD2 stuff.

Like I said, it is

And if Re-pinning the ECU plugs, isn't for you, there is a conversion harness for going OBD2-OBD1 (@ the ECU), that would make it a Plug-n-play affair.
Infact, while re-pinning would certainly work, I can't imagine why you wouldn't just use a Conversion harness.

 

[mattliston]

While an adapter harness is faster and easier, I have seen too many poor quality ones being used. At least the distributor adapter harness's are tried and true for the most part.

Seems whoever makes any of the ecu harness adapters forgets to crimp pins, and crappy connections can kill an ecu that is already hard to find in good condition.

 

[dfb399]

While an adapter harness is faster and easier, I have seen too many poor quality ones being used. At least the distributor adapter harness's are tried and true for the most part.

Seems whoever makes any of the ecu harness adapters forgets to crimp pins, and crappy connections can kill an ecu that is already hard to find in good condition.

I would still get a conversion harness.
I've done hours of re-pinning shit (with the correct tools), and even still, I'd say a 2-1 Conversion harness, from a Reputable company, is a far more reliable solution.
Hell, I've got a 15 year old Xenocron unit, that has been solid since day one.

 

[mattliston]

I would still get a conversion harness.
I've done hours of re-pinning shit (with the correct tools), and even still, I'd say a 2-1 Conversion harness, from a Reputable company, is a far more reliable solution.
Hell, I've got a 15 year old Xenocron unit, that has been solid since day one.

Most civic folks are not willing to spend $400 on proper wiring. Prices have shot upwards for good stuff, and much of the good stuff isnt made anymore

 

[dfb399]

Most civic folks are not willing to spend $400 on proper wiring. Prices have shot upwards for good stuff, and much of the good stuff isnt made anymore

You are not wrong.
Used to be, it was common/ideal to modify things in a manner which you can return the car to stock form for a future sale as well. But that seems to be fading away as well.
Imagine going to buy a used car, and the ECU plugs have been 'swapped'.. Yeah, deal breaker.