Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

p30 ecu question " how to tell if its usdm or jdm "

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Old Apr 19, 2006 | 11:01 AM
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Default p30 ecu question " how to tell if its usdm or jdm "

i was just wondering, how can you tell if its a usdm ecu or jdm ecu??? since they look the same and all "to me that is"???
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Old Apr 19, 2006 | 11:28 AM
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Default Re: p30 ecu question " how to tell if its usdm or jdm " (shyxboy)



from:

http://www.pgmfi.org/twiki/bin...ilies
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Old Apr 19, 2006 | 12:46 PM
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Default Re: p30 ecu question " how to tell if its usdm or jdm " (EG6_GUY)

^^ mostly all jdm ecu's are square
havent seen a nonsquare ecu before
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Old Apr 19, 2006 | 12:51 PM
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The japanese...the ones that invented the first microchip.....(for a calculator)...still have a smaller more compact ECU than us :-P
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Old Apr 19, 2006 | 12:57 PM
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Default Re: (Syndacate)

My B16a II (JDM) came with a rectangle box. I'm confused. Is it different in generations?
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Old Apr 19, 2006 | 12:59 PM
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someone used a Edm or USDM ecu
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Old Apr 19, 2006 | 01:01 PM
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Default Re: (schardbody)

Any performance difference between EDM, JDM, USDM?
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Old Apr 19, 2006 | 01:03 PM
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Default Re: (handa)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by handa &raquo;</TD></TR><TR><TD CLASS="quote">My B16a II (JDM) came with a rectangle box. I'm confused. Is it different in generations?</TD></TR></TABLE>

It may be a 2nd gen b16a with a obd-1 PR3 ecu, if it's jdm. The obd-1 PR3 I have is long like the ecu on the left.
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Old Apr 20, 2006 | 01:02 AM
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Default Re: (EG6_GUY)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EG6_GUY &raquo;</TD></TR><TR><TD CLASS="quote">

It may be a 2nd gen b16a with a obd-1 PR3 ecu, if it's jdm. The obd-1 PR3 I have is long like the ecu on the left.</TD></TR></TABLE>

i would need to see the bar code sticker on the ecu in order to determine weather it's jdm or usdm. cuz there are jdm ecu regular size as well.
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Old Apr 20, 2006 | 03:19 AM
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Default Re: (whitesi-94)

thats right usa is bigger then jdm for usa
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Old Apr 20, 2006 | 04:39 PM
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Default Re: (Syndacate)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">The japanese...the ones that invented the first microchip.....(for a calculator)...still have a smaller more compact ECU than us :-P</TD></TR></TABLE>

OT a bit, but the first semiconductor microchip/cpu/microprocessor - the 4004 - was designed and produced ALL by Intel. It was designed for a calculator though.

My only guess about why JDM's are smaller are cost of materials. SMD parts would be cheaper there, while large bulky parts pose no warehouse storage premiums in the USA like they would in Japan.
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