Quote:
Originally Posted by all4spl
Oh thank you for that. That makes things much easier. So I need to create a patch harness from the Factory ECU to the GM one. are people putting that inside? I saw the Vorshlag kit is putting it where the factory battery goes but I'm not trying to move that. Also do you know if the factory ECU plugs are available so I can pin my own harness? I'll dig around a bit to see if there is anything but I wanted to see if anyone found them already.
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Wire the GM engine to be like a "standalone" engine in the car and minimize the Subaru wiring.
Quote:
Originally Posted by chaoscentral
You need the FRS ECU in order to run all the amenities. Power Steering, Tach, Speedometer, Fuel level, ABS, AC etc. The new box from MRS lets the ECUs basically talk to each other making alot of that stuff work. So yes, you do need the FRS ECU as well as the GM ECU.
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If you go with my CAN solution, yes, I prefer to leave the factory ECU in the vehicle. It weighs less than a pound, just keep it. It will really only need a few wires going to it to produce all of the signals needed, so if someone would eventually really want to slim down the wiring, it is possible.
Reason for leaving the factory ECU is that we base all of the message timings off of it and it also provides signals for brake input and cruise control buttons.
Quote:
Originally Posted by aagun
frs can work fine with other engines. all what we need are frs crank single and and temp senser for rpm and heat gauges . but cel will glow up . rpm works and temp works also fans
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If you are manually wiring up a crank angle sensor and dual coolant temp sensors for the CAN stuff to work, yes.