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6 cylinder sequential injection setup?

Posted: Mon Aug 24, 2015 4:11 pm
by Sworddylan
Hello all, Could anyone tell me how the settings need to be set for sequential injection on a 6 cylinder? I'm working on a 7mgte in a supra, trying to get it fired up. I was sent the base map for a stock 7m, which is batch fired injection, but the harness was rebuilt to run sequential injection. I am not sure how the injection settings need to be setup and I can't seem to find an answer to it. Any help would be awesome.

Re: 6 cylinder sequential injection setup?

Posted: Mon Aug 24, 2015 9:32 pm
by derOJ
Wich ignition order do you have?
usually 1 - 5 - 3 - 6 - 2 - 4

so if you want to inject when inlet valve is closed you have to know at which crankshaft angle it is closed.

on a 6 cyl the ignition events occur every 120 degrees of crankshaft rotation. so in EMU one injection event is bounded to one ignition event.
that means you can inject in 120 degree "steps" before top dead center of every cylinder

But keep in mind that ignition events are different to firing order! for example ignition event 2 is not cylinder 2, but cylinder 5 ( when firing order is as mentioned above)

Think about it and try, or just search this forum for the settings :P
but thinking and doing yourself is better for understanding and learning :mrgreen:

Re: 6 cylinder sequential injection setup?

Posted: Tue Aug 25, 2015 5:54 am
by RHD
Injection settings wont usually stop it from running unless the injectors are not assigned or connected at all so it sounds like you have problems with your ignition or trigger settings

Re: 6 cylinder sequential injection setup?

Posted: Sun Sep 06, 2015 6:37 pm
by jbrito
So what wold be a perfect sequential injection, squirt when the valve is open or advance the squirt when is still closed?

This is my setup right now

Ignition Event #1 -> Cilinder #1 (G8)
Ignition Event #2 -> Cilinder #5 (B8)
Ignition Event #3 -> Cilinder #3 (G9)
Ignition Event #4 -> Cilinder #6 (G1)
Ignition Event #5 -> Cilinder #2 (G16)
Ignition Event #6 -> Cilinder #4 (B16)

Injector 1 Phase -> Ignition Event #1
Injector 2 Phase -> Ignition Event #5
Injector 3 Phase -> Ignition Event #3
Injector 4 Phase -> Ignition Event #6
Injector 5 Phase -> Ignition Event #2
Injector 6 Phase -> Ignition Event #4