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Stock ecu?

 
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Old 06-09-2010, 09:52 AM
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Stock ecu?

I'm looking for a stock ecu (p13) for a 01 type SH. Been lookin on eBay but can't find one, although that may be because I don't know how to navigate eBay. Any suggestions on where to look?
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Old 06-10-2010, 02:37 AM
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Re: Stock ecu?

Seriously? Everyone keeps telling me I can find one easily enough, but no one can tell me where to look?


Bumping for posterity.
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Old 06-10-2010, 03:29 AM
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Re: Stock ecu?

depends on after i put my p28 in. i got a p13 I do believe because my engine is h22a4. I will take pics of soon if its right, and if it is the right one, i can let it go.
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Old 06-10-2010, 04:45 AM
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Re: Stock ecu?

Isnt the P13 the 4th gen ECU?
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Old 06-10-2010, 09:17 AM
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Re: Stock ecu?

... wouldn't you need a p5p ecu?
And you should already have that in your car.

I didn't think you could just through in any ecu you want on an sh because of the atts.
p13 ecus are obd1 for one to work you would need a conversion harness.
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Old 06-10-2010, 11:41 AM
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Re: Stock ecu?

Oh, I thought the p13 was stock. So I guess I need the p5p or whatever.

And my ecu is chipped and I believe that's whats causing my lean condition, so I'm gonna stick a stock ecu in there and see what happens.
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Old 06-10-2010, 12:53 PM
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Re: Stock ecu?

Do you have proof that it is chipped? You need to look and see what is in there. I didn't think you could chip a p5p. The previous owner might have lied. Are you 100% sure it's running lean?
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Old 06-10-2010, 12:57 PM
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Re: Stock ecu?

No, but the engine gets up to temp very rapidly, and the spark plugs I just pulled out of it were white and a bit glazed, like they had melted tips. And the car has no rev limiter. Got it up to 8000rpm and it still pulled.
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Old 06-12-2010, 06:28 PM
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Re: Stock ecu?

Ok, so I can't find any damn stock p5p ecu's for sale for my particular car. Not a one. Not even sure what the part number is.

Would it be easier to look for a stock ecu for sale, or go hondadata?
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Old 06-12-2010, 06:51 PM
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Re: Stock ecu?

man bro, you are having alot of problems with that lude. ._. hopefully you can find the right ecu..
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Old 06-12-2010, 07:01 PM
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Re: Stock ecu?

Yeah I know, I hope I do too....which is why I'm asking if anyone knows where to find one....cuz I sure as hell can't....
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Old 06-12-2010, 07:10 PM
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Re: Stock ecu?

how about.. you just like try to order a new ecu. instead of stock? or a new ecu with stock parameters?
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Old 06-12-2010, 07:20 PM
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Re: Stock ecu?

Not sure what you mean. The whole point why I'm trying to find a OEM ecu is because mine is chipped, and I believe the fuel mapping for it is retarded, which is prolly whats causing my ****ty engine performance. So ya....

Also, my car was manufactured in japan....so would a jdm ecu work as long as it was for an 01 type SH?
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Old 06-12-2010, 08:37 PM
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Re: Stock ecu?

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p13 ecus are obd1 for one to work you would need a conversion harness.
96 Preludes came with an OBD2 P13. I don't see why that wouldn't work. Honestly dude you can probably get a chipped P28/P72 and a conversion harness for the same price (or cheaper) than a stock unit. You could request the stock basemap for the H22 and it would get the job done just fine.
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Old 06-12-2010, 09:03 PM
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Re: Stock ecu?

Oops forgot about 96 lol. Well I still do not think it would work. I thought it would need an sh/type s ecu because of atts.
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Old 06-12-2010, 11:51 PM
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Re: Stock ecu?

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Originally Posted by dbd6604 View Post
96 Preludes came with an OBD2 P13. I don't see why that wouldn't work. Honestly dude you can probably get a chipped P28/P72 and a conversion harness for the same price (or cheaper) than a stock unit. You could request the stock basemap for the H22 and it would get the job done just fine.
Ok, awesome idea....but how the hell would I go about doing that? Pretend I'm somebody who has never dealt with this stuff before and have no idea what to do or where to go do it. Actually, don't pretend.

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Oops forgot about 96 lol. Well I still do not think it would work. I thought it would need an sh/type s ecu because of atts.
Yea, I'm pretty sure my ATTS doesn't work as it is, which is why I want a SH ecu. I've heard if you use a non-SH ecu on a car with ATTS either the ATTS or ecu will cut fuel or power or something like that because they aren't communicating.

Dunno if my ATTS even works, was thinking maybe if the ecu is chipped that could be why the ATTS light has never kicked on.
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Old 06-13-2010, 06:06 AM
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Re: Stock ecu?

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Originally Posted by havikprelude View Post
Not sure what you mean. The whole point why I'm trying to find a OEM ecu is because mine is chipped, and I believe the fuel mapping for it is retarded, which is prolly whats causing my ****ty engine performance. So ya....

Also, my car was manufactured in japan....so would a jdm ecu work as long as it was for an 01 type SH?
97-01 honda prelude OEM ecu engine computer SH P5P H22 : eBay Motors (item 350298624464 end time Jun-26-10 15:49:53 PDT)
here ya go.. there is LITTERALY 1 ONE EBAY!!!!!!!!

i have one a stock p13 and a chipped p13. and my original p5p ecu.
-brian
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Old 06-13-2010, 06:11 AM
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Re: Stock ecu?

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Originally Posted by havikprelude View Post
Ok, awesome idea....but how the hell would I go about doing that? Pretend I'm somebody who has never dealt with this stuff before and have no idea what to do or where to go do it. Actually, don't pretend.



Yea, I'm pretty sure my ATTS doesn't work as it is, which is why I want a SH ecu. I've heard if you use a non-SH ecu on a car with ATTS either the ATTS or ecu will cut fuel or power or something like that because they aren't communicating.

Dunno if my ATTS even works, was thinking maybe if the ecu is chipped that could be why the ATTS light has never kicked on.
Dude..
Are you getting a ATTS light on the dash when you start the car?
if not, you are more than likely running a p13/p28 whatever aftermarket obd1 ecu.
if you are getting the ATTS light on during running the car, it is disabled because of a problem w/ the engine or the ATTS unit itself (i also have a 99 sh)
You will also need the ATTS control ecu.
There is two ecus that control the SH/..... the engine ecu and the ATTS ecu.
97-01 honda prelude OEM CHASSIS CONTROL BOX P5P ATTS: eBay Motors (item 350205169536 end time Jun-16-10 09:53:30 PDT)
thatss the second one you would need to restore it back to original.
let me know ..
-Brian
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Old 06-13-2010, 06:12 AM
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Re: Stock ecu?

Is your car a 2001 SH? Cuz if it is...

Also, I gotta find out what the part number for my ecu is. Anyone know how to find it? I think my ecu is on the drivers side kick panel....not sure...



And no, there has (as far as I know) never been an ATTS light that ever came on in my car...

I'm gonna go out and check to make sure, then see if I can find the part number, so see if its a p5p or p13 or p72 or what have you.


Also I doubt its an obd1 ecu, there's an obd2 data port on the drivers side kick panel and I have been able to tap into it using an obd2 tester. So has autozone, to check a CEL. Which was an emission code that I erased and it never came back. (long story, it was my mechanics fault.)
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Last edited by havikprelude; 06-13-2010 at 06:20 AM.
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Old 06-13-2010, 06:49 AM
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Re: Stock ecu?

Just went out to check my car.

I have no idea what an ATTS light would look like, but I know what all the lights that come on when I turn my car on are for. No ATTS light. Not during any phase of ignition...not radio, acc, or start. Or when the car is running. No light, at all.

I also looked for my ECU...under the drivers side kick panel on the left side, there's a fuse box under there, and alot of wires, relays, etc. Nothing that looks like an ECU.
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Old 06-13-2010, 07:08 AM
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Re: Stock ecu?

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Originally Posted by havikprelude View Post
Just went out to check my car.

I have no idea what an ATTS light would look like, but I know what all the lights that come on when I turn my car on are for. No ATTS light. Not during any phase of ignition...not radio, acc, or start. Or when the car is running. No light, at all.

I also looked for my ECU...under the drivers side kick panel on the left side, there's a fuse box under there, and alot of wires, relays, etc. Nothing that looks like an ECU.
oki, first of all dude... calm down.. i know this can be fustrating, but i have been through this exact problem. In my earilier posts, i sent you 2 links, 1 to a ecu and 1 to the atts ecu controller.
your obd(1 or 2) port depends on the computer.
no matter what autowhoever connects to it, it will scan. OBD = on board diagnostics. basically your cars computer system. trust me.. i fix computers for a living.
heres the deal... go get a 10mm socket..
on your passenger side... pull up the carpet... (where your passengers feet go, up against the firewall)
you will see a large metal encasement... there are 4 or 5 10mm bolts holding this thing down. once you have removed it, the underside of this contains your ecu. I wish i took pics of it, but trust me......
its on the passenger side, all the way almost up to the firewall.
again, remove this large holder and flip it over (pull back the carpet as much as needed.) and then look at the ecu. It will have a serial tag somewhere on it. I think it will say P13 and a **** load of other random number and will be probally about the length on the metal holder tray it was attached to.
it is about maybe a foot long. the p5p is ... maybe 4 or 5 inches in length. also more than likely you will have another (to the left or somewhere close) set of harness plugs that arent hooked up to anything. those are for your ATTS unit. if possible take a picture, so i can see whats going on in there.
if you have the ATTS unit (its also small and should be on the other side of the ecu) then you will not need to get one. (saves you some $$)
but this is what we need to know...
on the ECU..... post the #s on it. is it a P5P (thats the original one that came w/ the car) or is it a P13 or P28 or P72.
it will say it somewhere on it.

let me know.
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Old 06-13-2010, 07:15 AM
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Re: Stock ecu?

Lol I'm not very calm. Haven't slept all night, wired on pepsi and cigarettes, and very excited that someone who knows their shiz is helping me lol. I pretty much got two weeks to find and fix the problems on my car, so any help I get is awesome.

Anyway, I'll go out and look at it, I can take as many pictures as my slow ass internet connection is willing to upload lol.
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Old 06-13-2010, 07:20 AM
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Re: Stock ecu?

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Originally Posted by havikprelude View Post
Lol I'm not very calm. Haven't slept all night, wired on pepsi and cigarettes, and very excited that someone who knows their shiz is helping me lol. I pretty much got two weeks to find and fix the problems on my car, so any help I get is awesome.

Anyway, I'll go out and look at it, I can take as many pictures as my slow ass internet connection is willing to upload lol.
ok, not a big deal.. i learned like everyone else here just by surfing and doing a sh-tton of research. im just letting you skip that crap and fix your car.
but heres a few facts.. other members were incorrect about..
P13=4th gen prelude ecu
P28=integra ecu
P72=Civic ecu i think.
P5P= stock 97-01 SH ECU

post those results, and pics once you get them.
i havent slept either,i had 3 teeth extracted so i hurts to do anything.
-Brian
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Old 06-13-2010, 07:42 AM
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Re: Stock ecu?

its been a bit, im gunna attempt to eat probally fail horribly and then come back to this.
figure in an hour ill check back on this.
or cod modern war 2.
i wont ditch ya, ill be back in a bit.
-Brian
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Old 06-13-2010, 07:57 AM
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Re: Stock ecu?



This is under my passenger floor carpet. Not sure if this is what you're talking about, but the nuts holding it down are square, so a 10mm socket wouldn't fit. So...I can't get it off.




This is something I found that looked like it might be an ecu or something related. Its to the left of the first picture, behind my center console.


Anyway, I'm gonna go shave, maybe eat. Can't let myself fall asleep or I'll be asleep all day, and I wanna put my CAI on today and maybe my test pipe. Also gonna wash my car and see what suspension parts I need to replace, maybe replace my right radius rod and both radius rod bushings. Doubt my dad will let me though, I don't have any tools at my house so I have to use the firehouse to do work on my car, and I can only be down there when my dad is down there and he's not very patient when it comes to my car.
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Battery, Starter and Alternator Testing Procedures
Problems starting engine? | 5th gen resource

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Old 06-13-2010, 08:46 AM
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Re: Stock ecu?

ok, well so far so good.. almost.
the first pic... the thing under your capret.. w/ the square nuts...
remove it.
maybe its a 9 or 11mm socket then.
im on painkillers, so i cant remember the size at the moment.
either way get that unbolted and then post a pic of whats under there.
deal with this before you go and do anyhting else.
a CIA or test pipe isnt going to help you until you deal w/ why you cars running ****ty first.
trust me.
-Brian
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Old 06-13-2010, 08:48 AM
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Re: Stock ecu?

i just realized what you are talking bout.
no no..... dont try to take those square bolts off.
they are the bolts holding the ecus to the frame of that big metal thing (the tray itself) and cannot be removed from this side (this is the underneath)
you need to look at the corners of this metal thing to find the bolts where you need to remove them.

not the square bolts themselves.
they are on the outside of the perimiter of the whole metal thing.
post back .
-Brian
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Old 06-13-2010, 09:32 AM
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Re: Stock ecu?

Well I can't take it off. Not right yet anyway. All I've got is a 10mm socket, a nutdriver, and a 3/8ths or possibly even smaller ratchet. Problem is, the bolts are recessed enough I can't reach them without an extension for the ratchet, and I can't get enough force on the nutdriver to break them loose, and I can't even find a pair of vicegrips.

It sucks not having a good set of tools...


Anyway the only halfway decent tools are in the toolbox on my dad's trailer, which he took to my grandmas to mow her lawn. The trailer is for our lawnmowers, we used to run a landscaping business.

So I won't have access to any kind of tools til he gets home, and by then he'll prolly want to go to the firehouse to get my stuff done. And while putting on my CAI and test pipe may not really help things, I want to get them done anyway, and time is at a premium here so I gotta get as much stuff done as I can, while I can. I also need to go to advanced and pick up another set of spark plug anti foulers and a filter for my CAI. Prolly should order my radius rod and maybe a knock sensor while I'm at it, possibly even a fuel pressure regulator and fuel filter.

I also still don't know if I'll need a new set of drive belts, a manual tensioner and timing belt/water pump kit or even a new clutch kit/flywheel. But that's another story and I'll prolly worry about that a little later.


If you (or anyone else) wants to read up on all the problems my car has, to help in finding a solution, I have many threads about it lol. There's "Wanna diagnose my 5th gen?" and "I am royally screwed" and "Weird stuff goin on" all in the general tech forum. I also have one or two others in the 5th gen forum.
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Last edited by havikprelude; 06-13-2010 at 09:37 AM.
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Old 06-13-2010, 10:29 AM
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Re: Stock ecu?

Well, after breaking two nuts loose, then loosing my socket down behind the metal panel and taking a good five minutes to retrieve it, I looked up and saw two spaces in the metal plate which allow you to read the part numbers on the ecu.

I felt behind each hole that you could see stickers through, and felt two individual boxes, roughly the same size. The one to the left read 48310-P5P-033 and the one to the right read PLM. they both had some other numbers but for whatever reason I felt these seemed to be the most important. To the left of the one that read p5p I felt a connector.

So I take it this means it has a stock ecu? Can a p5p be chipped? If the other box i the ATTS control box, then do you have any idea why my ATTS doesn't work?

And if the ecu is stock, any other reasons for my car's loss of power, hesitation and I believe lean running condition?



The only things I can think of, would be my cat, the weaponR SRI, my no-name headers, my fuel pressure regulator, my knock sensor, or my bent radius rod and my crappy tire alignment. Maybe my fuel filter. Other than that, I'm fresh out of ideas.


I'm going to put on my CAI, and replace my cat with a test pipe and o2 sensor ant-fouler mod. Then pull the clock radio fuse which should reset my ecu. Maybe this will help, maybe not.
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Battery, Starter and Alternator Testing Procedures
Problems starting engine? | 5th gen resource

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You're such a whiny little douche sometimes, but posts like these make me love you.

Last edited by havikprelude; 06-13-2010 at 10:38 AM.
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Old 06-13-2010, 10:37 AM
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Re: Stock ecu?

Pretty sure you hit the nail on the head. The PLM would be your ATTS control unit I believe. And I'm pretty sure you can't chip the p5p considering it's OBD2. The reason chipped p28s and p72s are so abundant is that they are OBD1 and there were soooooooo many Civics and Integras produced.

However...if you have the stock ECU....but your ATTS isn't working properly and your car is running like ****, but you're not getting an ATTS or CEL....wtf. Maybe someone removed the bulbs from your dash or some other ghey ****. IDk, I gotta go to work.
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