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boomtheroom

G4+ gtr plugin ecu

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This reply from nzefi 

Hi Chris,

 
For fuel pump speed control, you need to use a spare auxiliary output that supports GP PWM. These are AUX-1 through to AUX-8 only, which are on the ECU header connector on a GTR plug-in. Therefore, fuel pump speed control will not work through either of the expansion connectors on a GTR plug-in.

 

So what does this mean?

 

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It means you cant use the expansion connector, but Im not sure why you would want to anyway.  Aux 1 and 2 are already in the trunk/boot connected to the stock GTR fuel pump controller so use either of those.

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Or would i need to use both aux 1 and aux 2? one for speed and one for the trigger to switch on the relay to feed direct battery voltage to the fuel pump module? 

and would i need to splice into the side of the loom before the factory module of one of the wires already in the boot running to the factory fuel pump?

Cheers for the help

Fuel Pump Speed Control on G4+ Rev1.1.pdf

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The "fuel pump enable" relay is already there (Aux 6), note however the main fuel pump relay gets its power from the ignition switch which is not a great idea with a bigger pump.  It would be wise to cut the wire off FP relay pin 3 and run it straight to the battery. 

You will want to cut the FPCM1 (aux 2) or FPCM2 (aux 1) wire off the FPCM and run that to your new controller.

bMZEHbv.png

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would i leave FPCM1 (aux 2) connected if i i cut FPCM2 (aux 1) 

5 minutes ago, boomtheroom said:

would i leave FPCM1 (aux 2) connected if i i cut FPCM2 (aux 1) 

btw.. why does it have 2 fpcm on the factory module?

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