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h23a jdm 5th gen

 
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Old 07-01-2009, 11:29 PM
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Icon7 h23a jdm 5th gen

so i havent been on the forum in idk how long, i always posted in 4th gen because i have a 94 f22a jdm sohc. tonight i traded my truck for a 5th gen with a new h23a swap done, i need a new speed sensor to make the idle right and an obd1 ecu instead of the obd2 i have in the car, also my speedometer isnt working. is there any suggestions on what could be the cause of the spedo not working and does anyone have an obd1 ecu for the h23a they can sell me?? or better yet, can anyone let me know if ive got the right idea, what ecu should be with the h23a? im confused :/

Last edited by vegas94; 07-01-2009 at 11:33 PM.
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Old 07-01-2009, 11:39 PM
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Re: h23a jdm 5th gen

uhhhh h23 in a 5th gen?????? are you sure.... as for the speedo check to make sure the VSS is plugged in...
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Old 07-01-2009, 11:43 PM
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Re: h23a jdm 5th gen

Ok, you'll need to find out what the H23 is doing there. Is it a blue top like the Euro R, or is it a stocker like the 4g?
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Old 07-01-2009, 11:55 PM
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Re: h23a jdm 5th gen

just take a picture of your engine bay
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Old 07-02-2009, 12:10 AM
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Icon14 Re: h23a jdm 5th gen

its a blue top h23a i just got it tonight the guy i got it from just swapped the motor in there 5 weeks ago ill put a picture up tomorrow, and as far as the speedo, its on and moves but it goes up and down between 0 and 20 and the rpm gauge works just fine, it also has an apexi vtech timer im guessing is what it would be called. ill post up some pictures by tomorrow thanks for the fast response guys
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Old 07-02-2009, 12:26 AM
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Re: h23a jdm 5th gen

Sounds like someone got a bundle of troubles to work through.
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Old 07-02-2009, 01:31 PM
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Re: h23a jdm 5th gen

thats going to blow if its a stock h23 in the 4th gen... owned.
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Old 07-02-2009, 07:00 PM
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Re: h23a jdm 5th gen

sounds like it the H23 vtec out of the euro accord.
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Old 07-02-2009, 09:14 PM
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Re: h23a jdm 5th gen

Quote:
Originally Posted by vegas94 View Post
so i havent been on the forum in idk how long, i always posted in 4th gen because i have a 94 f22a jdm sohc. tonight i traded my truck for a 5th gen with a new h23a swap done, i need a new speed sensor to make the idle right and an obd1 ecu instead of the obd2 i have in the car, also my speedometer isnt working. is there any suggestions on what could be the cause of the spedo not working and does anyone have an obd1 ecu for the h23a they can sell me?? or better yet, can anyone let me know if ive got the right idea, what ecu should be with the h23a? im confused :/
the VSS is what makes the speedo and odo work. since yours is busted, neither of those are working but the tach still does. a malfunctioning VSS will NOT cause idling troubles tho, at all.
idling problems are caused by other malfunctioning parts:
the FINAL idle problem thread!!!!!

you do realize if you do the OBD1 conversion, your also going to need the conversion harness, dizzy, and injectors as well right?

Quote:
Originally Posted by Vanillagorilla View Post
thats going to blow if its a stock h23 in the 4th gen... owned.

lmfao, please please pleeeeaseeeeee inform us as to why you think its gonna blow
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Old 07-02-2009, 11:12 PM
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Re: h23a jdm 5th gen

i already have the harness for the obd1 swap. the idle problem is because of the fact that the coolant line that runs through the throttle body from the radiator is eliminated thus making the idle wierd. my roomates jetta does the same thing and his is elminated as well. im going to try and get the vss sensor asap. so i also need bigger injectors?? how expensive is it to get the obd1 ecu tuned? any help is super appreciated. im going to try and get some good pictures posted asap, i spent the whole day working on painting the white front bumper thats on my black car so that itd match and didnt have time to take any pictures. as of right now the car has the h23a swap with an lsd tranny apexi cat back exhaust, apexi vafc II vtech controller air/fuel converter, obx headers, aem cold air intake with k&n filter, fully adjustable tien coilovers, megan racing front and rear sway bars and megan racing tensioner bars with 17 inch wheels and tires.

as far as problems go, the car runs good and strong except the rev limiter hits hard in second gear because of the obd2 ecu which is not good for autocross. once i put in a tuned obd1 it should be perfectly fine the swap was done by a honda technician so i may be lucky with this one i guess ill find out.

someone sell me a obd1 ecu for cheap!!!
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Old 07-02-2009, 11:53 PM
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Re: h23a jdm 5th gen

Y duz u have mor dan wun hedder 4 ur h23????/?
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Old 07-03-2009, 11:07 PM
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Re: h23a jdm 5th gen

VEGAS94, I am currently doing the same swap in my 5th gen. Your ecu needs to be a P13 or chipped P28(I'd go p13). They vary in price but usually its around 150-250 you are lucky to have yours already swapped because it has become a headache for me tracking all the parts down. Anywho i am new to this forum heres some pics of my progress......



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Old 07-04-2009, 02:23 AM
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Re: h23a jdm 5th gen

why would you say the p113 over the chipped p28, just curious. i just know it needs to be an obd1 ecu and that i already have the harness just no idea how exactly to hook it all up and what else needs to be done. as far as i know from the guy i got the car from he said its all ready just needs the ecu it self the car runs perfectly fine as of now and i use it as my daily driver/autox. the only thing thats wrong with it is the speedometer not working due to the vss and the needs for the obd1 ecu and the fact that the rev limiter kicks in a 6500 rpm in first and second so thats only 1500 rpm of vtech. and yes it is the euro motor, real h23a no numbers after. i know the difference. im gonna try and get some good pictures of the car this weekend to put up for you guys. again i cant say enough times, does anyone have an obd1 ecu that will work for my motor?? and why would you think the motor was going to blow?
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Old 07-04-2009, 03:53 AM
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depending on the chip in the p13 the vtec kicks in between 48-55 and redlines at 8500

BRASH22 you still have your idea they are RSX rims painted and they where on the car when i bought it. Also Vegas the p13 is obd1 i dont remember if you said you had a manual tensioner but i know in time you will need to get one.

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Old 07-04-2009, 03:40 PM
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Re: h23a jdm 5th gen

a chipped p28 is the way you want to go... the h23a's redline is lower than the h22 for a reason. using the p13 will give you the h22's redline and u will probly tear up your motor b.c its not meant to rev that high.

motoxxxman on preludepower got me my chipped p28 for like 230...adjusted crossover, launch control and check engine shift light... along with whatever redline i wanted...
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Old 07-04-2009, 04:02 PM
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Re: h23a jdm 5th gen

With the p28 do youhave to get it chipped to have it run properly or is it a plug and play the mechanic at jdmenzinezone told me p13 is the way to go as long as all the sensors have been switched to a h22 ie map, coolant, i forgot the rest i really dont know that much about the P28 230 doesnt seem bad skunk 2 has a couple p13 for 150.But your p28 works perfect hmm the 230 doesnt sound to bad for it working right
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Old 07-04-2009, 10:20 PM
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Icon5 Re: h23a jdm 5th gen

yeah dude i already got the manual tensioner, so you think if i have it redline like the h22 it will tear my motor apart?? what if i were to put some new pistons, cams, valve springs, valves, adjustable cam gears, retainers and all the internals it would be fine with the ecu i have? and also where exactly is my ecu located in my car, my other lude is a 94 and the ecu is under the carpet behind a metal plate in the passanger floor board but im not sure where exactly it is in the 97.


where can i find that skunk2 p13 you were talking about??

p14 is stock ecu for the h23a1, will that work on the jdm h23a??

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Old 07-05-2009, 12:42 PM
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Re: h23a jdm 5th gen

Quote:
Originally Posted by SKEW View Post
depending on the chip in the p13 the vtec kicks in between 48-55 and redlines at 8500

BRASH22 you still have your idea they are RSX rims painted and they where on the car when i bought it. Also Vegas the p13 is obd1 i dont remember if you said you had a manual tensioner but i know in time you will need to get one.
depending on the CHIP in the p13?? um...if you know what ur doing with a ROM editing program like CROME or ECTune...u can set vtec at 1500rpms if u wanted to, and set redline in a safer range like i dunno....under 8k.

OBD1 ECU: FOR LESS THAN 230. IF u wanna paypal me $230, i'll buy this ECU and SHIP it to u
http://www.xenocron.com/chipped-obd1...0cdfbdefbc43e3

Select "I want a basemap" and he'll send u the ECU with a chip in it, that will run the engine.


U won't need bigger injectors. U need obd1 VTEC injectors which are approx. 370cc/min. Someone correct me if I'm wrong please.

OBD1 preludes run peak and hold injectors, and the obd2 5th gens use saturated...which is why 4th gens need resistor boxes, and 5th gens don't. Its just 2 different styles of injectors for hondas.




DO YOU HAVE THE H23A VTEC, or the h23a1 NON VTEC????????
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Old 07-05-2009, 12:46 PM
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Re: h23a jdm 5th gen

Quote:
Originally Posted by vegas94 View Post
yeah dude i already got the manual tensioner, so you think if i have it redline like the h22 it will tear my motor apart?? what if i were to put some new pistons, cams, valve springs, valves, adjustable cam gears, retainers and all the internals it would be fine with the ecu i have? and also where exactly is my ecu located in my car, my other lude is a 94 and the ecu is under the carpet behind a metal plate in the passanger floor board but im not sure where exactly it is in the 97.


where can i find that skunk2 p13 you were talking about??

p14 is stock ecu for the h23a1, will that work on the jdm h23a??
READ my previous post. And NO the p14 will allow it to run, but will redline u at 6700rpms, and u won't have VTEC.

Best bet, order an ECU with a basemap, then drive to a tuning shop, and have them tune ur car once you've finished the OBD1 conversion.
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Old 07-05-2009, 03:28 PM
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Re: h23a jdm 5th gen

Quote:
Originally Posted by ShoofIsLudin View Post
depending on the CHIP in the p13?? um...if you know what ur doing with a ROM editing program like CROME or ECTune...u can set vtec at 1500rpms if u wanted to, and set redline in a safer range like i dunno....under 8k.

OBD1 ECU: FOR LESS THAN 230. IF u wanna paypal me $230, i'll buy this ECU and SHIP it to u
http://www.xenocron.com/chipped-obd1...0cdfbdefbc43e3

Select "I want a basemap" and he'll send u the ECU with a chip in it, that will run the engine.


U won't need bigger injectors. U need obd1 VTEC injectors which are approx. 370cc/min. Someone correct me if I'm wrong please.

OBD1 preludes run peak and hold injectors, and the obd2 5th gens use saturated...which is why 4th gens need resistor boxes, and 5th gens don't. Its just 2 different styles of injectors for hondas.




DO YOU HAVE THE H23A VTEC, or the h23a1 NON VTEC????????

you DONT need to change injectors... the ecu will not notice a difference in obd1 or 2 injectors only the injector will notice if the resistance is wrong. i think you said you have an obd1 wiring harness... which is fine... u dont need the resistor box you just connect all 5 wires together where the plug would go into the box. i can show u cuz im running obd2 injectors with my obd1 wiring harness

that is an ok deal. but you dont have any other options but to have it run the car... like i said in my previous post i got alot more than just running my car. and he can have his redline set by him for that motor... not the h22 redline.

and he has the h23vtec
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Old 07-05-2009, 04:51 PM
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Re: h23a jdm 5th gen


<br>

<br>

<br>

<br>

<br>
theres pictures of the car and motor so everyones questions are answered about what motor it is, it is infact a jdm h23a with vtech, it has an obd2 ecu in it. i need an obd1, i already have all the necessary changes made for the swap except for the fact that it needs the obd1 ecu, i have the obd1 harness, but im not using it yet because i dont have the ecu, is anyone on the forum in the orlando florida area?? and is anyone exactly sure what obd1 ecu i need to put in there for a 100 percent positive because ive heard a few different things now lol
lemme know whats good?!

Last edited by vegas94; 07-05-2009 at 04:53 PM.
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Old 07-11-2009, 12:42 AM
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Re: h23a jdm 5th gen

SPEEDINNOVATIONS.COM

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Old 07-12-2009, 09:07 PM
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Re: h23a jdm 5th gen

What exhaust is that?
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