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Single Injector Bank Wiring Question

Posted: Sun Jul 20, 2008 11:09 am
by dubbase
I am trying to install my MS2 so that I can swap it in and out with the stock fuel injections system easily since it is my daily driver. The stock injector harness has a 2 prong connector to disconnect the stock ECU. I would like to wire MS2 to utilize the stock plug for simplicity.

My question is; how do I wire all four injectors on a single bank using only 2 wires. I know I wire power through one wire but should I ground the injectors through both injectors banks on the MS2 ecu and run simultaneous batch injection in the software? Normally I would wire power to all injectors and ground 2 injectors to one bank and the other 2 injectors to the other bank and run alternating injection.

Thanks for the help

Re: Single Injector Bank Wiring Question

Posted: Mon Jul 21, 2008 5:27 am
by SQLGUY
What resistance do you read between the two pins going to the injectors?

Re: Single Injector Bank Wiring Question

Posted: Wed Jul 23, 2008 6:12 am
by dubbase
The resistance reading at the connector is 3.7 to 5 Ohms.

Re: Single Injector Bank Wiring Question

Posted: Wed Jul 23, 2008 3:43 pm
by SQLGUY
If the four injectors in parallel are reading between 3.5 and 5 ohms, then they're high impedance, and you should be able to drive them all off of one injector output as-is.

Kind of makes sense, since if you were running a multi-port V8 you'd need to be able to run the two banks like this.

Cheers,
Paul

Re: Single Injector Bank Wiring Question

Posted: Wed Jul 23, 2008 5:04 pm
by dubbase
So I don't need to tie in the other pins for the second injector bank? or in other words I can leave pins 35 and 34 disconnected and only use pins 32 and 33 for all 4 injectors?