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ID this ECU for me?

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Old Jan 19, 2007 | 11:12 AM
  #1  
577HondaPrelude's Avatar
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Default ID this ECU for me?

I was told when I bought it (E-bay), that it was a "virgin" P72 OBD1 JDM ECU. Well it's not "virgin" (stupid E-bayers), anyone can see it's been socketted for some type of chip. ...and now I'm not 100% sure it's the JDM ECU, anyone have a picture of the USDM P72 obd1 ecu? I need to figure our what board I have.

The main connector reads:
37820-P72-A01
813-115357 3G15

this is a picture of the main IC board:

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Old Jan 19, 2007 | 12:39 PM
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Default Re: ID this ECU for me? (577HondaPrelude)

i know the JDM ecu's are smaller, but I haven't seen one personally.

Though, the board size is certainly not a USDM OBD1 board. It's too small.

I would bet it's a JDM OBD1 P72.

edit: i'm completely wrong.

s


Modified by stevel at 9:25 PM 1/20/2007
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Old Jan 19, 2007 | 01:33 PM
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Default Re: ID this ECU for me? (577HondaPrelude)

Walter,
Why are you using the P72? Do you want to keep the intake butterfly secondaries & knock sensor? You could get a P28 for a lot cheaper than a P72. And a P28 could even be rewired to control the secondaries as well.
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Old Jan 19, 2007 | 02:01 PM
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Default Re: ID this ECU for me? (luder94si)

From Hondata's site:

http://www.hondata.com/ecus.html

They say the P72 has VTEC, IAB, and Knock
and the P28 is VTEC only, without IAB, and Knock.

thus, I figured the P72 was the way to go.
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Old Jan 19, 2007 | 04:01 PM
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Default Re: ID this ECU for me? (577HondaPrelude)

Hey Walt, I have my P72 w/Hondata S100 for sale on eBay. You might be able to get it cheap and you could just sell that one you already have.

And yes it is also a 37820-P72-A01 which is the USDM 94-95 GSR ECU.
http://cgi.ebay.com/ebaymotors...d=1,1
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Old Jan 19, 2007 | 06:36 PM
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Default Re: ID this ECU for me? (DR)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DR &raquo;</TD></TR><TR><TD CLASS="quote">Hey Walt, I have my P72 w/Hondata S100 for sale on eBay. You might be able to get it cheap and you could just sell that one you already have.

And yes it is also a 37820-P72-A01 which is the USDM 94-95 GSR ECU.
http://cgi.ebay.com/ebaymotors...d=1,1</TD></TR></TABLE>

seem the OP does have a USDM ecu.

And why would he want to buy your setup? He's got the exact same ecu. Or am i missing something?
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Old Jan 19, 2007 | 06:44 PM
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Default Re: ID this ECU for me? (stevel)

Mine has the s100 already in it and has been tuned to a Prelude almost exactly like his. He would still want to get it tuned better but it does have value over the P72 that he already has.
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Old Jan 19, 2007 | 07:29 PM
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Default Re: ID this ECU for me? (DR)

I'm getting the s300
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Old Jan 19, 2007 | 09:31 PM
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Default Re: ID this ECU for me? (577HondaPrelude)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 577HondaPrelude &raquo;</TD></TR><TR><TD CLASS="quote">I was told when I bought it (E-bay), that it was a "virgin" P72 OBD1 JDM ECU. Well it's not "virgin" (stupid E-bayers), anyone can see it's been socketted for some type of chip. ...and now I'm not 100% sure it's the JDM ECU, anyone have a picture of the USDM P72 obd1 ecu? I need to figure our what board I have.

The main connector reads:
37820-P72-A01
813-115357 3G15

this is a picture of the main IC board:

</TD></TR></TABLE>

Good thing it isn't JDM auto ECU as JDM P72 ECUs aren't socketable and aren't in the same family as other OBDI Civic/Integra ECUs. That ECU is already socketed but you will have to redo it for an S300. It isn't a big job for someone with proper rework equipment.


Modified by nfn15037 at 10:46 PM 1/20/2007
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Old Jan 20, 2007 | 08:29 PM
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Default Re: ID this ECU for me? (577HondaPrelude)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 577HondaPrelude &raquo;</TD></TR><TR><TD CLASS="quote">I'm getting the s300 </TD></TR></TABLE>

Me too which is why I'm selling this one. Did you see the upgrade package?
http://www.hondata.com/s300upgradeform.html I think it was only good until the end of last year though. You might check...
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