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DIY - How to hardwire your fuel pumps and keep all controller functionality

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67 replies to this topic

#61
evogtr

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Sorry we've stopped selling this not that other alternatives are available that are plug and play.


Thanks. Plug & play are 400 versus 100 for yours.

#62
jiossifi

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Can anyone help me with the attached questions?

Thanks in advance.

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#63
jiossifi

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bueller bueller...can anyone chime in



#64
shawnhayes

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I don't know enough about this problem to help.

 

I wish Nick was on more often, but he's awfully busy.

 

Shawn



#65
franzcars

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When I did mine, I just took the power wires from the hat and ran them to the trigger on the relays, runs great. But I had a fore kit so I had to cut the connectors off anyway


2013 Premium Deep Blue Pearl with 285/35 PSS's front, 18"NT05R's rear, SIR USM's, HKS Upgraded Actuators, TiTek 90mm Downpipes, AAM Resonated Midpipe, GotBoost intakes, GotBoost SD kit, Visconti Flex Fuel, Bosch 2200's, Fore tripple pump with with twin 485's DIY hardwired, Ecutek Etune by Bill@SprayItRacing
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#66
JohnnyDangerous

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Hey guys, just bumping this thread as we have run out of IDC (and money) so we decided to hardwire the pumps as per the instructions. Well we decided to measure the voltage to the second pump and it was 14.2 volt! So my question is why are we paying for premade hardwire kits when battery voltage is being supplied to the 2nd pump? Or am  I completely missing something? 



#67
Robertyu

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Digging this thread up from the dead...

 

I bought a Fore Innovations triple pump setup from TSM that I'm installing in my 2015, and this is in preparation for a full build later this year if my stocks don't tank again, haha.  It is also because my trims have been progressively climbing under load to the point of discomfort as a tuner, and I need to service the fuel system.  I've been running nothing but pump E85 for a year and a half, so the fuel system getting progressively worse was to be expected.  I did not really care as I knew I'd be replacing the entire fuel system soon anyway.  Onto my usage intent...

 

I don't have any questions about this guide, as it is easily understood.  I intend to use the Fore FC3 controller as my relays, with the secondary stage (pumps 2 & 3) of the FC3 being triggered by the stock sub-pump (2nd pump) relay trigger.  However, I'd like to retain use of the factory fuel controller for obvious fuel-heat-related reasons (Texas), and that means I would use the first stage output of the FC3 as the primary pump controller "input power", and run that current through the factory fuel controller with upgraded wiring to/from the pins of the controller.    This is all pretty straight forward as the Fore FC3 is nothing but some relays packaged together in a single housing.   I know, not a question yet, so here are the actual questions...

 

In my case, the primary pump in my Fore triple is a F90000274, which means Walbro 430/lph high-pressure.   This pump is fused at 25a (not 20a like Nick's pump in his post), and I would be attempting to run up to that current through the factory fuel controller circuit, albeit with upgraded 10ga wiring to/from it.  This would be attempting to push more current through this module than even Nick and Dave were apparently doing, so I understand the risk of frying this controller, and accept that risk.  Even so, I should check with the group here:   

 

The question is, is anyone getting away with running the power though this factory primary pump controller with this kind of draw for this pump?  the other question is, has anyone fried this controller doing this?  I doubt it would be an issue at low/med speed, but high speed would be more likely to make that circuit cry uncle.  Obviously, I'll just relay-power that primary pump straight out of the FC3 if I must, fuel temperature be damed, but it sure would be nice to keep that multi-speed control of the primary pump.  Hey, at least I'm not trying this with the larger pump requiring 30a!  ;-)

 

Okay, so who's killed this poor little factory pump controller unit like this?  haha


Edited by Robertyu, 11 June 2019 - 05:29 PM.

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#68
Robertyu

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As a follow-up, here is a graph of the pump in question.  It looks like I will be well under 20a in my usage scenario, other than some momentary pump start inrush.  Still, the question remains, anyone getting away with this using this pump, or has anyone fried their factory primary pump controller from doing this?

 

TI F90000274 current draw.png

 


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