Well when i bought my gsr head it came with the ecu (obd1 p72) but i believe that its USDM but im not sure how do i tell the difference...the reason im asking is b/c i plan on running the s300

 

yes it is USDM, for cuture reference, http://www.pgmfi.org has alist of every ecu out there and whether they were USDM, JDM, or EDM.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PnkRokCountryboy &raquo;</TD></TR><TR><TD CLASS="quote">Well when i bought my gsr head it came with the ecu (obd1 p72) but i believe that its USDM but im not sure how do i tell the difference...the reason im asking is b/c i plan on running the s300</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jay_Sensing &raquo;</TD></TR><TR><TD CLASS="quote">yes it is USDM, for cuture reference, http://www.pgmfi.org has alist of every ecu out there and whether they were USDM, JDM, or EDM.</TD></TR></TABLE>

How can you tell its USDM just because of what he said? lol

from the patterns we can learn the following:
first letter = country of orgin
J = Japan
C= Canada
A=USA
G=Europe
second digit, if 5, 7, 9 then ecu is auto usually
third digit denotes the version/variation

 

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

How can you tell its USDM just because of what he said? lol</TD></TR></TABLE>


My bust, when I checked PGMFI, I didn't notice the JDM P72, just saw the OBD1 and 2 USDM ones.

 

wel lwhere it has the code sticker there is nothing but #'s and on the far righ in caps it says AM..does this mean USA?

 

anyone else know?

 

I bought a swap that came with a OBD1 P72. It was a JDM motor but it was a smaller size compared to the P28s that I have laying around. Maybe that is what dictates JDM and USDM?

 

bump