I’m just redoing some of my engine bay wiring and tidying it all up and i really would love to remove the large and ugly "main relay" that sits in the engine bay.

My car (JDM S4 TII Vert) has a Microtech MTX8L in it that is wired up 100% independent of the factory wiring (coils injectors fuel pump ect...) and has none of the factory emission gear, But I just want to make sure that if i yank this out it isn’t going to affect my dash, a/c , power steering or some other unknown device?

I’ve looked it up in the FSM (page 50-22) and from my understanding it has two + power input’s from the main fuse box (B4 & B5) and trigger form the ING switch 1(1)

For the outputs it has two that go to the STD EFI and emissions gear the B/W and B/Y wires and the B wire that I’m assuming is the earth.

I’m fairly confident I’m right to yank it out but just want some confirmation from others that are a little more proficient in reading wiring diagrams first

Thanks

 

Sure.
The relay just triggers power to injectors, coils, and fuel pump.
If the MT rewires them all, then yank the relay.



-Ted

 

...plus all the stock 12V sensors and solenoids, and the ECU itself. But they're all gone or rewired too.

 

thanks guys,
Now I wish i could get rid of the loom to the Auto trans if it wasent for that i would only have the wipers, gauge senders and starter wire left in that main loom.
it is 100% neater already and i havent finished it yet