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Since my last post Ive been told that ecu code 20(electric load) has to do with the underhood fuse box sensor. This I already new. What I didn't know is that Canadian made 88-91 civics don't have these sensors. U.S. and maybe Japanese made fuse boxes do. This code although a (soft) code can effect the idle as the computer is looking for a reading it isnt getting.The pm6 runs a zc too lean, not enough timing, proved by the white plugs I pulled. The pm7 is the ecu I want to work. I tried a chipped pr5 with zc specs and it didnt compare, a lot of bogging. If anyone can tell me Im on the right track Id appreciate it
 

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If anything the pm6 (86-89 integra) runs to rich.........

sounds like you got a 86-87 PM6 ecu ....

what you needed was a 88-89 PM6....

also are you running premium.... 91+

if not you may be getting having pre ignition problems....( hents your problem with timing)


also...The ecu doesn't set timing.....you set the timing not the ecu.....
 

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G1tegZC said:
If anything the pm6 (86-89 integra) runs to rich.........

sounds like you got a 86-87 PM6 ecu ....

what you needed was a 88-89 PM6....

also are you running premium.... 91+

if not you may be getting having pre ignition problems....( hents your problem with timing)


also...The ecu doesn't set timing.....you set the timing not the ecu.....
A PM6 if from the 88-91 civics.... the PG7 is from an 86-89 integra.... I think you are confused
 

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Oops my bad.........

I knew this..........I promise :)

I don't know why I typed it like that


PG7 = us ZC ecu (86-89 Integra usdm
PM7 = JDM ZC ecu

what I ment to say was....................

with my experience the PG7 ecu runs the zc rich....not lean
 
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