V8 Swap wiring questions - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

wutsaiu · 04-03-2018, 10:56 AM

Why do you need the frs/brz ecu? If you’re using a canbus module it should be sending it’s own signals. Your frs ecu is doing nothing. I didn’t bother to remove mine though. As someone else mentioned, wire go ecu standalone and just wire up canbus module for tach and power steering, etc.

DustinS · 04-03-2018, 11:06 AM

Quote:

Originally Posted by wutsaiu

Why do you need the frs/brz ecu? If you’re using a canbus module it should be sending it’s own signals. Your frs ecu is doing nothing. I didn’t bother to remove mine though. As someone else mentioned, wire go ecu standalone and just wire up canbus module for tach and power steering, etc.

I think he is trying to attach the new engine harness to the body side of the factory engine harness plug and install the standalone ecu into the factory ecu plug via patch harness or the like. At least that is how it sounds to me.

all4spl · 04-03-2018, 12:41 PM

I'm fairly confident the pin out is correct but I have nixed this idea and am going EMtron so that I can get everything 100% working properly the first go around.

Chris1083 · 04-03-2018, 12:52 PM

Quote:

Originally Posted by all4spl

I'm fairly confident the pin out is correct but I have nixed this idea and am going EMtron so that I can get everything 100% working properly the first go around.

Are you doing your harness?

smudge · 04-08-2018, 07:10 AM

Quote:

Originally Posted by DustinS

I think he is trying to attach the new engine harness to the body side of the factory engine harness plug and install the standalone ecu into the factory ecu plug via patch harness or the like. At least that is how it sounds to me.

Correct

The Motec takes care of all the CANBUS stuff but we still need to make a new engine loom to pin into the OEM connector in the engine bay

all4spl · 04-09-2018, 03:59 PM

Yes the harness will be custom.

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04-03-2018, 10:56 AM	#15
wutsaiu Senior Member Join Date: Aug 2013 Drives: 2015 Raven V8 Location: Aurora Posts: 194 Thanks: 111 Thanked 263 Times in 81 Posts Mentioned: 6 Post(s) Tagged: 1 Thread(s)	Why do you need the frs/brz ecu? If you’re using a canbus module it should be sending it’s own signals. Your frs ecu is doing nothing. I didn’t bother to remove mine though. As someone else mentioned, wire go ecu standalone and just wire up canbus module for tach and power steering, etc.

04-03-2018, 12:41 PM	#17
all4spl Senior Member Join Date: Mar 2016 Drives: 2013 FR-S Location: Chesapeake, VA Posts: 400 Thanks: 61 Thanked 78 Times in 60 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	I'm fairly confident the pin out is correct but I have nixed this idea and am going EMtron so that I can get everything 100% working properly the first go around.

04-09-2018, 03:59 PM	#20
all4spl Senior Member Join Date: Mar 2016 Drives: 2013 FR-S Location: Chesapeake, VA Posts: 400 Thanks: 61 Thanked 78 Times in 60 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Yes the harness will be custom.

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