boomtheroom Posted September 13, 2019 Report Share Posted September 13, 2019 HI Guys Is there any way to run a fuel pump pwm such as this? https://www.nzefi.com/new-product-fuel-pump-pwm-speed-controller/ with the above ecu? if not ..what other options are there? cheers! Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 14, 2019 Report Share Posted September 14, 2019 Yes that is well proven. NZ EFI will give you a Link set up guide for it if you buy it off them. Quote Link to comment Share on other sites More sharing options...
boomtheroom Posted September 14, 2019 Author Report Share Posted September 14, 2019 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? Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 14, 2019 Report Share Posted September 14, 2019 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. Quote Link to comment Share on other sites More sharing options...
boomtheroom Posted September 14, 2019 Author Report Share Posted September 14, 2019 Oh ok so i can just tap off the factory pump trigger wire ? Quote Link to comment Share on other sites More sharing options...
boomtheroom Posted September 14, 2019 Author Report Share Posted September 14, 2019 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 Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 15, 2019 Report Share Posted September 15, 2019 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. Quote Link to comment Share on other sites More sharing options...
boomtheroom Posted September 15, 2019 Author Report Share Posted September 15, 2019 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? Quote Link to comment Share on other sites More sharing options...
Simon Posted September 15, 2019 Report Share Posted September 15, 2019 Low, Medium and highspeed modes Quote Link to comment Share on other sites More sharing options...
boomtheroom Posted September 15, 2019 Author Report Share Posted September 15, 2019 So the factory one doesn’t actually use pwm? Quote Link to comment Share on other sites More sharing options...
Simon Posted September 16, 2019 Report Share Posted September 16, 2019 Nope Quote Link to comment Share on other sites More sharing options...
Michael418 Posted September 17, 2019 Report Share Posted September 17, 2019 Is there a spare aux volt in the maf sensor wiring if I am not using maf that I could wire a wideband sensor into? Quote Link to comment Share on other sites More sharing options...
Simon Posted September 17, 2019 Report Share Posted September 17, 2019 Yes there is but you would normally just replace one of the factory narrowband 02 inputs Quote Link to comment Share on other sites More sharing options...
Michael418 Posted September 17, 2019 Report Share Posted September 17, 2019 I know but want to keep the narrowband and have the wideband as well. You any info on which wire it is? Quote Link to comment Share on other sites More sharing options...
Simon Posted September 17, 2019 Report Share Posted September 17, 2019 You will have to trace it through from the ECU end. Pin 35 at the ECU is the signal from the Front AFM and is connected to AN volt 5 Pin 27 is the signal from rear AFM and is AN Volt 4 Quote Link to comment Share on other sites More sharing options...
Michael418 Posted September 17, 2019 Report Share Posted September 17, 2019 Thanks for your help. Quote Link to comment Share on other sites More sharing options...
Michael418 Posted September 17, 2019 Report Share Posted September 17, 2019 Would I need to connect up a sensor ground as well. Quote Link to comment Share on other sites More sharing options...
Jefferson.C Posted September 18, 2019 Report Share Posted September 18, 2019 6 hours ago, Michael418 said: Would I need to connect up a sensor ground as well. Pin#26 is a sensor ground Quote Link to comment Share on other sites More sharing options...
boomtheroom Posted September 30, 2019 Author Report Share Posted September 30, 2019 On 9/15/2019 at 9:34 PM, Adamw said: 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. so just to be clear if i use aux1 to go to the (Nzefi speed controller) then just leave aux 2 unused or can i use aux 2 to trigger the relay switch through a new rely if i decide not to use the factory one? 527135255_FuelPumpSpeedControlonG4Rev1.1.pdf Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 30, 2019 Report Share Posted September 30, 2019 1 hour ago, boomtheroom said: so just to be clear if i use aux1 to go to the (Nzefi speed controller) then just leave aux 2 unused or can i use aux 2 to trigger the relay switch through a new rely if i decide not to use the factory one? Yep that would be fine, or use Aux 6 for the new relay. Quote Link to comment Share on other sites More sharing options...
boomtheroom Posted September 30, 2019 Author Report Share Posted September 30, 2019 39 minutes ago, Adamw said: Yep that would be fine, or use Aux 6 for the new relay. Just use these settings? Quote Link to comment Share on other sites More sharing options...
boomtheroom Posted October 1, 2019 Author Report Share Posted October 1, 2019 On 9/14/2019 at 5:53 PM, Adamw said: 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. On 9/15/2019 at 9:34 PM, Adamw said: 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. On 9/30/2019 at 7:32 PM, Adamw said: Yep that would be fine, or use Aux 6 for the new relay. if i use aux 2 to activate the relay do i connect the wire to the - side or the relay and the positive side (switch) to 12 v or does the aux 2 output 12 v to switch the relay on? Quote Link to comment Share on other sites More sharing options...
Simon Posted October 3, 2019 Report Share Posted October 3, 2019 Aux 2 will provide the ground Quote Link to comment Share on other sites More sharing options...
boomtheroom Posted October 3, 2019 Author Report Share Posted October 3, 2019 1 hour ago, Simon said: Aux 2 will provide the ground ok and is the setting in the picture of the ecu setup correct for doing this set item as fuel pump? Quote Link to comment Share on other sites More sharing options...
Simon Posted October 3, 2019 Report Share Posted October 3, 2019 Yes that is correct Quote Link to comment Share on other sites More sharing options...
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