Double Checking Fusebox Wiring

I am working on my first harness and I seem to understand most of the wiring, but I had a little trouble wrapping my head around all the fuse box wires. I made a diagram and I just wanted to see if I have the wiring correct, mostly that I have the ignition switch in the right spot and that I can power all the sensors, can, etc. off of the ecu relay.

I'd fuse the relay's 85 pin if that wire is also being used to power the rest of the engine.

I prefer to combine ECU and injectors on the same circuit, any voltage difference between the ECU's measured voltage and the injectors will cause lambda instability. its important they are the same.

That said do keep the ignition coils on their own circuit as they are electrically noisy.

Otherwise looks good and functional. Ecu and sensors and injectors are usually under 5 amps draw

Typically pin 30 would be supplied direct from the battery, in your diagram however you have all of those high current supplies leading back to the ignition switch? So unless the "ignition switch" in this case is something more like a battery isolator and the wire is sized for the ~60A (guess) total load then this doesnt seem like a good idea.

Thank you for the responses. I did not know about the lambda instability, but makes complete sense. I also see what I did there putting everything through the ignition switch, whoops. Here is an updated diagram, I moved the injectors over to the ecu's relay and I don't have the high current side running through the ignition switch.