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Hacking up Honda's ECU
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PostPosted: Sun Oct 18, 2020 11:51 pm 
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Joined: Sat Apr 09, 2011 8:17 pm
Posts: 8
I don’t normally get many of the 1980 boards into my shop for socket/vtec conversion work and I have never ran across this issue before. I have a p75 that I’ve converted to vtec and it’s throwing a code 21 once vtec is approached on the engine sim. I have chipped all these the same with success, I’ve never had one like this act up before. I have swapped 4 5151 hi sides and a few of the q26 units out to rule out them for being the issue.

It occasionally throws a code 22 when extensively testing on the sim.

If you guys might have any advice or possibly a p75 schematic that I can trace back and make sure all is there.


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