H22A into EG, What ECU? - Honda-Tech

NAEGH22 · 10-05-2008, 02:28 AM

hi all,

i've searched but havent come up with any firm answers. none that i could make sense of anyway...

I've got a 93 EG civic and a 95 honda prelude H22A half cut. i plan on doing the swap but im a noob when it comes to electronics. I've found the info i need to figure out what i have to modify on both harnesses (civic and prelude engine harness) to get the H22 to work but what i'm stuck on is the ECU.

After adapting the H22 harness into the civic one do i use the prelude ecu (P13) or the civic one (p28) to run the H22? pretty much what i wanna know is which ecu do i plug my moddified harness into to get the H22 running in my civic?

Also i want to run Hondata after i get the setup running and i've worked out that a integra (p72) ecu would be best as it has knock and secondary butterfly control. but how would this work with the setup? do i just get a P72 ecu and plug it in? will it run? or will i have to get it chipped and then tuned to make it work?

thanks guys for any help

Rob_O · 10-05-2008, 08:12 AM

Modify the Z6 harness, and chip the P28. You don't need the IABs or the knock sensor

If you have done everything properly it will fire right up on the P28 and not throw any codes.

hpi247 · 10-05-2008, 10:40 AM

do not use the p28 to run the h22. p28 runs a little motor, p13 runs a big motor. you can either use your p13 and properly hook everything up to avoid a check engine light or go with an ECU chipped for an h22.

NAEGH22 · 10-05-2008, 10:00 PM

what has eveyone else done who has done this swap?

90blackcrx · 10-05-2008, 10:31 PM

Chipped p28, then get it tuned or run on a modified gsr map.

NAEGH22 · 10-06-2008, 03:09 AM

there must be a way to do this swap and drive away using one of the factory ecus?

90blackcrx · 10-06-2008, 08:24 AM

Quote:

Originally Posted by NAEGH22

there must be a way to do this swap and drive away using one of the factory ecus?

I'm sure there is but it requires a lot more work, why don't you just run a chipped p28 ?

NAEGH22 · 10-06-2008, 11:28 AM

cause im sure that this swap can be done doing fairly simple modifications using one of the standard ecus

where are all the EG H22ERS?

90blackcrx · 10-06-2008, 11:42 AM

Quote:

Originally Posted by NAEGH22

cause im sure that this swap can be done doing fairly simple modifications using one of the standard ecus

where are all the EG H22ERS?

We have 3 in our shop right now, all running chipped p28's . It doesn't get much easier then that really. If you get an internal coil distributor you really don't have to do any wiring, besides extending things. How simpler do you want it ?

Rob_O · 10-06-2008, 07:43 PM

I'm running a modified Z6 harness and a chipped P28 with the internal coil 90black mentioned.

When I first put my hatch together I had 1 day to do it so I didn't have time to chip and tune the ECU. I drove it around like granny on the stock P28 'til I had time to finish the job. When I had time I did a compression and leakdown test, changed the fluids, made sure nothing was leaking then put the hammer down

That's my experience, good luck with your build

NAEGH22 · 10-06-2008, 09:54 PM

are the p28, p72 and p13 all interchangeable in an EG civic?

hpi247 · 10-07-2008, 01:13 PM

yes they are. you have two options...p13 or chipped ECU. if you so desire, mess the engine up with other ECUs.

lollypopking · 10-07-2008, 02:46 PM

Running the p13 does not require alot more work, only the addition of three sensors if you already have a z6 harness. Some people prefer to run the oem ecu to minimize the probability of problems and to run an oem basemap without having to send the ecu out to be chipped and wait on it to get back. You can find this information in the H22 FAQ at the top of the hybrid forum. If you decide to do a programmed ecu, I would recommend ordering one from pherable.net. They give you the option to eliminate the extra sensors, set your vtec engagement point, add a 2 step launch control, and other things all for $175 and 3 day shipping. That's the route I will be going with my H2B swap.

h22crxpwr · 10-07-2008, 03:26 PM

Quote:

Originally Posted by NAEGH22

hi all,

i've searched but havent come up with any firm answers. none that i could make sense of anyway...

I've got a 93 EG civic and a 95 honda prelude H22A half cut. i plan on doing the swap but im a noob when it comes to electronics. I've found the info i need to figure out what i have to modify on both harnesses (civic and prelude engine harness) to get the H22 to work but what i'm stuck on is the ECU.

After adapting the H22 harness into the civic one do i use the prelude ecu (P13) or the civic one (p28) to run the H22? pretty much what i wanna know is which ecu do i plug my moddified harness into to get the H22 running in my civic?

Also i want to run Hondata after i get the setup running and i've worked out that a integra (p72) ecu would be best as it has knock and secondary butterfly control. but how would this work with the setup? do i just get a P72 ecu and plug it in? will it run? or will i have to get it chipped and then tuned to make it work?

thanks guys for any help

Cheapest way and effective and safe, would be to run a P28 Ecu and get it Crome Tuned...

There are Basemaps available for H22 using the P28 ecu (phearable is good) . which work pretty good but never as safe or as effective as tuning.

Get it tuned. And get a P28.. You don't need the knock sensor or the butterflies. Just disable them. i gained 6 whp on the dyno disabling the butterflies.

grunt2001 · 10-07-2008, 04:34 PM

i ran a p13 at first then i had ran a p28 with tune u would not imagine the difference. the h22w/p13 untune...160whp....the p28 tuned h22 made over 180whp

e46civic · 10-07-2008, 04:49 PM

Easiest to do is the P13, you have it and its for that engine. Hooking up a few sensors is not as hard as everyone seems to be telling you it is. Getting rid of the IABs may get you some HP higher up, but it also gets rid of some of the low end torque you got the H22 for.

90blackcrx · 10-07-2008, 05:13 PM

If you are always using the h22 injectors that require a resistor box, you will need to wire those in.

Quote:

Originally Posted by h22crxpwr

Cheapest way and effective and safe, would be to run a P28 Ecu and get it Crome Tuned...

Key word is effective,

. Who tosses in an h22 into an eg and keeps it stock, on a stock base map these engines love to breath, and can really gain some power with the right tune.

Quote:

Originally Posted by e46civic

Easiest to do is the P13, you have it and its for that engine. Hooking up a few sensors is not as hard as everyone seems to be telling you it is. Getting rid of the IABs may get you some HP higher up, but it also gets rid of some of the low end torque you got the H22 for.

I'd rather have that power band a little higher since that's where the car is most of the time and gain that extra horsepower from removing the iab's , and porting the manifold.

Modified by 90blackcrx at 5:19 PM 10/7/2008

H_doubledeuce_A1 · 10-08-2008, 12:18 AM

Stock USDM p13 here.

NAEGH22 · 10-08-2008, 02:55 AM

thanks for all the replies guys. thats the kind of info i was looking for. I think i'm just gonna use the P13 to get everything up and running.

h22crxpwr · 10-08-2008, 09:31 AM

Quote:

Originally Posted by NAEGH22

thanks for all the replies guys. thats the kind of info i was looking for. I think i'm just gonna use the P13 to get everything up and running.

ok i really don't suggest using that ECU unless you don't want the most out of your motor...

put it this way,

92 civic 4 door. stock JDM H22 with hotshot header

1/4 mile times with each ECU

p13 ECU - 14.3
Stock GSR ecu - 13.7
Chipped GSR Ecu - 13.3
Chipped P28 Ecu - 12.8

This was in a full interior Daily driven 4 door.

All Runs were made on the same day, i kept switching ECU's and i was waiting for the guy to bring me my chipped Ecu. This was back in 1998. ANd this was untuned.... there was no Hondata or Crome back then.

Now with Tuning there is a lot more available.

Its up to you but i recommend the P28 Chipped and Tuned. Tuning is the key to running smooth, safely, and to get the most out of your motor.

you could be running lean and not even know it. Tuning over anything would be my #1 recommendation.

Good luck on whatever you choose! let me know if you need any H22 parts.

NAEGH22 · 10-08-2008, 11:17 AM

thanks for your reply.

i realise that tuning will optimise the engines performance although i was looking for an option to be able to get the car up and running using either the p28 or p13 that i already have.

Once i do some mods i plan on swapping to a p72 and getting hondata.

h22crxpwr · 10-08-2008, 02:01 PM

Quote:

Originally Posted by NAEGH22

thanks for your reply.

i realise that tuning will optimise the engines performance although i was looking for an option to be able to get the car up and running using either the p28 or p13 that i already have.

Once i do some mods i plan on swapping to a p72 and getting hondata.

just keep the p28 and go hondata.

If the P28 is stock i wouldn't recommend using it just to get it running. the cheap way would be to just get the p28 chipped from Phearable for now and then go Hondata later.

Rob_O · 10-09-2008, 07:15 AM

Quote:

Originally Posted by NAEGH22

Once i do some mods i plan on swapping to a p72

Why?

NAEGH22 · 10-09-2008, 05:44 PM

knock sensor and secondary butterfly control

10-05-2008, 10:00 PM	#4
NAEGH22 Join Date: Sep 2005 Location: Australia Posts: 80	what has eveyone else done who has done this swap? __________________ learning everyday

10-05-2008, 10:31 PM	#5
90blackcrx Senior Member Join Date: May 2008 Location: RCautoworks, Illinois, USA Posts: 458	Re: (NAEGH22) Chipped p28, then get it tuned or run on a modified gsr map. __________________ http://www.RCautoworks.com

10-06-2008, 03:09 AM	#6
NAEGH22 Join Date: Sep 2005 Location: Australia Posts: 80	there must be a way to do this swap and drive away using one of the factory ecus? __________________ learning everyday

10-06-2008, 11:28 AM	#8
NAEGH22 Join Date: Sep 2005 Location: Australia Posts: 80	cause im sure that this swap can be done doing fairly simple modifications using one of the standard ecus where are all the EG H22ERS? __________________ learning everyday

10-06-2008, 09:54 PM	#11
NAEGH22 Join Date: Sep 2005 Location: Australia Posts: 80	are the p28, p72 and p13 all interchangeable in an EG civic? __________________ learning everyday

10-05-2008, 02:28 AM	#1
NAEGH22 Join Date: Sep 2005 Location: Australia Posts: 80	H22A into EG, What ECU? hi all, i've searched but havent come up with any firm answers. none that i could make sense of anyway... I've got a 93 EG civic and a 95 honda prelude H22A half cut. i plan on doing the swap but im a noob when it comes to electronics. I've found the info i need to figure out what i have to modify on both harnesses (civic and prelude engine harness) to get the H22 to work but what i'm stuck on is the ECU. After adapting the H22 harness into the civic one do i use the prelude ecu (P13) or the civic one (p28) to run the H22? pretty much what i wanna know is which ecu do i plug my moddified harness into to get the H22 running in my civic? Also i want to run Hondata after i get the setup running and i've worked out that a integra (p72) ecu would be best as it has knock and secondary butterfly control. but how would this work with the setup? do i just get a P72 ecu and plug it in? will it run? or will i have to get it chipped and then tuned to make it work? thanks guys for any help __________________ learning everyday

10-05-2008, 08:12 AM	#2
Rob_O Join Date: May 2007 Location: Louisville, KY, USA Posts: 47	Modify the Z6 harness, and chip the P28. You don't need the IABs or the knock sensor If you have done everything properly it will fire right up on the P28 and not throw any codes.

10-06-2008, 07:43 PM	#10
Rob_O Join Date: May 2007 Location: Louisville, KY, USA Posts: 47	I'm running a modified Z6 harness and a chipped P28 with the internal coil 90black mentioned. When I first put my hatch together I had 1 day to do it so I didn't have time to chip and tune the ECU. I drove it around like granny on the stock P28 'til I had time to finish the job. When I had time I did a compression and leakdown test, changed the fluids, made sure nothing was leaking then put the hammer down That's my experience, good luck with your build

10-07-2008, 02:46 PM	#13
lollypopking Join Date: Oct 2003 Location: Dallas, Texas, United States Posts: 270	Re: (hpi247) Running the p13 does not require alot more work, only the addition of three sensors if you already have a z6 harness. Some people prefer to run the oem ecu to minimize the probability of problems and to run an oem basemap without having to send the ecu out to be chipped and wait on it to get back. You can find this information in the H22 FAQ at the top of the hybrid forum. If you decide to do a programmed ecu, I would recommend ordering one from pherable.net. They give you the option to eliminate the extra sensors, set your vtec engagement point, add a 2 step launch control, and other things all for $175 and 3 day shipping. That's the route I will be going with my H2B swap. __________________ For Sale - http://www.hondamarketplace.co...19913 1996 Honda Accord - http://www.hondamarketplace.co...32000

10-07-2008, 04:34 PM	#15
grunt2001 Join Date: Feb 2008 Location: ft riley, ks, us Posts: 5	i ran a p13 at first then i had ran a p28 with tune u would not imagine the difference. the h22w/p13 untune...160whp....the p28 tuned h22 made over 180whp

10-07-2008, 04:49 PM	#16
e46civic Join Date: Dec 2005 Location: Saugerties, NY Posts: 88	Re: (grunt2001) Easiest to do is the P13, you have it and its for that engine. Hooking up a few sensors is not as hard as everyone seems to be telling you it is. Getting rid of the IABs may get you some HP higher up, but it also gets rid of some of the low end torque you got the H22 for. __________________ HID questions go here http://www.hidplanet.com

10-08-2008, 12:18 AM	#18
H_doubledeuce_A1 Join Date: Jan 2004 Location: BaY ArEa, Ca, United States Posts: 242	Re: (90blackcrx) Stock USDM p13 here. __________________ 1992 Honda Prelude SI: H23a1 to USDM H22a1 conversion Wrecked 09/09/05 R.I.P I/h/E 1992 Honda Civic DX Hatchback: USDM H22a1 I/H/E http://www.blacktrax.net

10-08-2008, 02:55 AM	#19
NAEGH22 Join Date: Sep 2005 Location: Australia Posts: 80	thanks for all the replies guys. thats the kind of info i was looking for. I think i'm just gonna use the P13 to get everything up and running. __________________ learning everyday

10-08-2008, 11:17 AM	#21
NAEGH22 Join Date: Sep 2005 Location: Australia Posts: 80	thanks for your reply. i realise that tuning will optimise the engines performance although i was looking for an option to be able to get the car up and running using either the p28 or p13 that i already have. Once i do some mods i plan on swapping to a p72 and getting hondata. __________________ learning everyday

10-09-2008, 05:44 PM	#24
NAEGH22 Join Date: Sep 2005 Location: Australia Posts: 80	knock sensor and secondary butterfly control __________________ learning everyday