I am putting a GSR in next week and I need 2 know if the OBDo to OBD1 conversion harness is easy ehough to install myself or will I need to take it somewhere to be wired. Also, what is the bast ECU to use once I convert???

 

u can do it your self if u have the jumper harness p28 the best ecu!

 

I am going to buy the harness from BOOMSLANG for $150. I jsut don t want to start a project and not B able to finish it!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sirq2u &raquo;</TD></TR><TR><TD CLASS="quote">u can do it your self if u have the jumper harness p28 the best ecu! </TD></TR></TABLE>

I've been researching this for the past 2 days. I'm doing an obd1 conversion soon. I thought the p28 was a SOHC ecu. Why get that? GSR uses the P72.

 

You chip the p28 and it will run the gsr. Thats what I got.
PS, check my site for gsr swap info.
Ryan


Modified by droppedcrxsi at 11:46 PM 9/25/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRXLST &raquo;</TD></TR><TR><TD CLASS="quote">I am going to buy the harness from BOOMSLANG for $150. I jsut don t want to start a project and not B able to finish it!!</TD></TR></TABLE>

If you are good at wiring/soldering and know what color all the wires on the engine go to on the harness it should only take a few hours.

Preperation makes all the difference.

 

You should definitely be able to do it on your own. I wired mine up without buying a conversion harness ( made my own) and it only took a few hours, and I'm not the best at wiring stuff.

Thats the point of buying a conversion harness: to make it easy

Good luck!

 

Well you won't have any questions when you purchase from me. Killer tech support, simple instructions, color coordinated pigtail for sensors, etc. Here is a link to my sale thread.

https://honda-tech.com/zerothread?id=997093

You can do a search for this topic and see my reputation. Also, when you search, you will see tons of links to building these yourself. There are many many write ups, etc. Either way you choose, let me know if I can help.

 

blownhatch you got pm

 

I run a P28 on Uberdata w/ Blown90Hatch's Harness. His harness is the Best hands down! The instructions are easy to follow and I installed mine in about 20 minutes (wiring and all).

I have an 89' hatch w/ 95' b18b. You must use an OBD1 Dizzy and a 4 wire o2 which blown's instructions explain how to hook up very simply. If you send me both dizzies I can repin the obd1 dizzy to run the obd0 plugs(clean look, plug& play). LMK. You pay shipping both ways and I'll do the work for $20!

Phil

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Blown90hatcH &raquo;</TD></TR><TR><TD CLASS="quote">Well you won't have any questions when you purchase from me. Killer tech support, simple instructions, color coordinated pigtail for sensors, etc. Here is a link to my sale thread.

https://honda-tech.com/zerothread?id=997093

You can do a search for this topic and see my reputation. Also, when you search, you will see tons of links to building these yourself. There are many many write ups, etc. Either way you choose, let me know if I can help. </TD></TR></TABLE>

Well.. maybe you can answer this. No one has so far. How to take an OBDII setup and install it into an OBD0 car and covert to OBDI and pass smog tests.

I am considering purchasing a b18c5 (USDM not a Japanese B18c) to put in a 91 Honda CRX HF. My understanding is that this is a obdII engine. Don't know if it is obdIIa or obdIIb.

The car is OBD0. I would like to go to OBDI.

I would like to be able to run a Hondata setup for tuning as part of the conversion.

Car must pass ATL, GA smog laws.

Car must retain ac.

I assume that what I will be buying will be a complete changeover (seems to be the way these things come). So I guess what I would receive would be Engine, tranny, ECU, dizzy, axles and harness. Intake and exhuaust manifolds. Dizzy and ECU would be OBDII I guess. I assume the engine will have OBDII sensors. IACV, tps 02 sensor(s) etc etc.

So.. what do I do? Do I need to purchase another dizzy? Which one? If so will the dizzy attach to the B18c5 head properly? Do I need to get OBDI sensors? And plug or remove or replace the OBDII sensors?

And I am sure I have missed a lot of questions. I have been trying to figure this one out for a while and have not been able to get straight answers.

Thanks for any info..

 

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

Well.. maybe you can answer this. No one has so far. How to take an OBDII setup and install it into an OBD0 car and covert to OBDI and pass smog tests.

I am considering purchasing a b18c5 (USDM not a Japanese B18c) to put in a 91 Honda CRX HF. My understanding is that this is a obdII engine. Don't know if it is obdIIa or obdIIb.

The car is OBD0. I would like to go to OBDI.

I would like to be able to run a Hondata setup for tuning as part of the conversion.

Car must pass ATL, GA smog laws.

Car must retain ac.

I assume that what I will be buying will be a complete changeover (seems to be the way these things come). So I guess what I would receive would be Engine, tranny, ECU, dizzy, axles and harness. Intake and exhuaust manifolds. Dizzy and ECU would be OBDII I guess. I assume the engine will have OBDII sensors. IACV, tps 02 sensor(s) etc etc.

So.. what do I do? Do I need to purchase another dizzy? Which one? If so will the dizzy attach to the B18c5 head properly? Do I need to get OBDI sensors? And plug or remove or replace the OBDII sensors?

And I am sure I have missed a lot of questions. I have been trying to figure this one out for a while and have not been able to get straight answers.

Thanks for any info..</TD></TR></TABLE>

To run a b18c5 get an 0bd 1 p28 ecu, any obd 1 b-series dizzy, 4 wire o2 sensor, obd0 to 1 harness. Get with blown90hatch and he can install the connector on your ecu to run hondata.
I have a obd0 b16 in my hatch. Converting to obd 1 soon. After that i'm installing a b18c5. My electrical will already be done.

 

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

Well.. maybe you can answer this. No one has so far. How to take an OBDII setup and install it into an OBD0 car and covert to OBDI and pass smog tests.<FONT COLOR="blue">I will try to answer your questions sir.</FONT>

I am considering purchasing a b18c5 (USDM not a Japanese B18c) to put in a 91 Honda CRX HF. My understanding is that this is a obdII engine. Don't know if it is obdIIa or obdIIb.<FONT COLOR="blue">Integras from 96-99 are OBD2a and 00-01 Integras are OBD2b.</FONT>

The car is OBD0. I would like to go to OBDI.<FONT COLOR="blue">Good Choice</FONT>

I would like to be able to run a Hondata setup for tuning as part of the conversion.<FONT COLOR="blue">No problem. Would you like a base map with that? All my P28 ecus are setup for Hondata/Datalogging.</FONT>

Car must pass ATL, GA smog laws.<FONT COLOR="blue">Do they put the car on the "dyno" or just the constant rev smog check.</FONT>

Car must retain ac.<FONT COLOR="blue">You will need to modify your stock AC bracket or source a company that sells the ac compatible bracket with your mount kit.</FONT>

I assume that what I will be buying will be a complete changeover (seems to be the way these things come). So I guess what I would receive would be Engine, tranny, ECU, dizzy, axles and harness. Intake and exhuaust manifolds. Dizzy and ECU would be OBDII I guess. I assume the engine will have OBDII sensors. IACV, tps 02 sensor(s) etc etc.<FONT COLOR="blue">Since this will be OBd2 and you want the OBD1 ecu setup, you will not be able to use the OBD2 ecu obviously. You will be able to use the OBD2 distributor, sensors, etc. The OBD2 alternator plug will be different and you will want to conver that or go to an OBD1 alternator.</FONT>

So.. what do I do? Do I need to purchase another dizzy? Which one? If so will the dizzy attach to the B18c5 head properly? Do I need to get OBDI sensors? And plug or remove or replace the OBDII sensors?<FONT COLOR="blue">As stated above, all of the sensors will work. The key here is that you should get the engine harness with the swap. You will take all the extra connectors needed for the conversion off of it. You will want the engine harness plug for the distributor so that you can add that to your HF engine harness. As well as if you plan on running the OBD2 injectors, you will need to use the OBD2 injector clips and solder them onto your HF engine harness. If you want, you can send me both engine harnesses and I can do all the wiring for you. You will also use the 4 wire O2 sensor from the swap as well. IF it does not come with one, you will need to purchase one.</FONT>

And I am sure I have missed a lot of questions. I have been trying to figure this one out for a while and have not been able to get straight answers.<FONT COLOR="blue">That is the problem with many of these companies that do not build the harnesses themsleves or the ones that copied the pinouts offline. Let me know if you have any other questions and I till try and answer them. </FONT>

Thanks for any info..</TD></TR></TABLE>

Jason

 

Thanks. Good info finally. One issue I was really concerned with was the dizzy. Read all kinds of stuff about dizzy x on head y, 3 bolt flanges miss-match. Cut off one and two MAY work... etc etc. Also the alternator issue I have not heard before. As to the dyno smog check, I will have to see. A local station does it. They attach a sniffer to the tail pipe and there is a dyno roller. Whether they use it for me or not I can't remember. I have other cars that have ODBII and I think they just atttach that to the computer and read some data.

What is the issue with the 'dyno' test?

One thing I have been told is that if (and I do not want to) I converted the car to ODBII using all of the USDM changeover stuff, they would just plug into that and it would probably be cleaner than my HF. But I don't think GA is as strict as many other states. In fact if I move out of the metro area there are no smog laws (currenty).

I have the ability to do the heavy lifting (air tools, engine hoist etc) and the funds to buy the stuff instead of making it myself. My goal is to identify all of the parts necessary and purchase them. Take my time and install the parts and then take the car and have it dyno somewhere in ATL. Been through a similar exercise years ago with a custom turbo'd 240z which eventually wore me out but now I'm back for more.

Anyway.. good answers... Thankx..

now if someone could just tell me how to fix the detent on the driver's side door.....