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07-30-2015, 10:36 PM | #376 |
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Join Date: Aug 2010
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MWSOC
Location: Cincinnati
Vehicle:2004 STi JavaBlackPearl |
^^^^^ i found the fix. mine did the exact thing.
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08-14-2015, 03:58 AM | #377 |
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Join Date: Oct 2010
Chapter/Region:
South East
Location: Lake Worth, Florida
Vehicle:2011 STI White |
I installed the Aeromotive Fuel Pump Controller and Autometer Tach Adapter. These two units control my first pump in my surge tank. This works fantastic. Noticeable difference in the temperature of my surge tank after a decent length drive. My second pump is switched by a Hobbs switch. I'm running two walbro 465 E85 pumps in my surge tank.
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08-19-2015, 07:29 AM | #378 | |
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Member#: 359175
Join Date: Jun 2013
Location: North Huntingdon PA
Vehicle:2010 Forester XT |
Well, mine was doing the same thing. It was an easy fix, being a forester I have a 12volt key source right in the hatch (the rear cigarette lighter), so I just tapped on to that. My car sat for two weeks and the battery didn't drain at all. My relay was hot before I made the changes and acted just as you described. Thanks for the research, you saved me hours and hours of troubleshooting.
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08-21-2015, 02:39 PM | #379 | |
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Member#: 159738
Join Date: Sep 2007
Chapter/Region:
SCIC
Location: SGV
Vehicle:2004 WRB STi 620awhp OFCD V3, FR TS, BW8374EFR |
To clarify, the FPC stays plugged in and wires are just being spliced into the harness for a direct hard wire. When wiring up a Walbro 465lph pump, it is being grounded at the FPC. Wouldn't be more optimal to ground with a thicker wire to the chassis with at least 10 gauge? In my case, this would be a hard wiring of a secondary Walbro 465 but with my engine management, AEM series 2 triggering the relay to turn on at certain parameters. A primary Walbro 465lph pump will be controlled by the Fuelpro.
Quote:
Last edited by methaddict; 08-21-2015 at 02:47 PM. |
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08-21-2015, 02:43 PM | #380 |
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Member#: 359175
Join Date: Jun 2013
Location: North Huntingdon PA
Vehicle:2010 Forester XT |
Doing that will disable the fuel pump duty cycles and it will run 100% all the time. The FPC controls duty cycles via the ground wire.
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08-21-2015, 02:54 PM | #381 |
Scooby Specialist
Member#: 159738
Join Date: Sep 2007
Chapter/Region:
SCIC
Location: SGV
Vehicle:2004 WRB STi 620awhp OFCD V3, FR TS, BW8374EFR |
Will the oem FPC be able to handle the higher amperage of the Walbro 465? Since this is a secondary pump it will only run when it meets the parameters I set on the AEM 2 for example a ground signal can trigger the relay to turn on at 14.7 psi or 1 bar.
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08-21-2015, 03:09 PM | #382 |
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Member#: 359175
Join Date: Jun 2013
Location: North Huntingdon PA
Vehicle:2010 Forester XT |
I have about 3k on my set up with no problems (other than fixing the relay 12volt key source). Other's have far more miles on it. If you are using it as a secondary, wouldn't it just be best to let it run at 100% when you need it with a relay and your AEM triggering it?
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08-24-2015, 03:36 AM | #383 | |
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Join Date: Sep 2007
Chapter/Region:
SCIC
Location: SGV
Vehicle:2004 WRB STi 620awhp OFCD V3, FR TS, BW8374EFR |
Quote:
Last edited by methaddict; 08-24-2015 at 03:45 AM. |
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08-24-2015, 10:18 AM | #384 |
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Member#: 359175
Join Date: Jun 2013
Location: North Huntingdon PA
Vehicle:2010 Forester XT |
That sounds right, but would it be easier to just mount the relay under the hood or under the dash and only run one wire from the relay to the fuel pump? I would look at running as few wires as possible to the back of the car. I don't know where your AEM is mounted, but this is just my thinking only have one wire running through the car is easier to troubleshoot should the need arise. There are plenty of key on power wires under the dash or hood to use for the 86 pin of the relay.
Whichever way you go you should be good. Just make sure that the relay shuts off after the key is off as it was discovered that the stock FPC lets the relay stay energized with the key off. |
08-24-2015, 05:03 PM | #385 |
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Join Date: Oct 2012
Chapter/Region:
MWSOC
Location: https://t.me/pump_upp
Vehicle:Juli sti JuliusVetJD |
Quick question. The wire going to the fuel pump from pin 87. Is that a new wire or the factory wire? What gauge?
Last edited by veritasaequitas; 08-24-2015 at 07:41 PM. |
10-26-2015, 05:50 PM | #386 |
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Join Date: Jan 2011
Location: albany ny
Vehicle:2011 turbotek fxt 11.85@117 4eat xt record? |
Ok sorry if this covered but I can't read through this whole thread on my phone. How do I stop the relay from draining my battery? if I let it sit for more then a week it's dead. If I run it off another 12v location that doesn't see constant voltage will I lose anything?
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10-26-2015, 05:53 PM | #387 |
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You probably have it wired wrong. You want the ignition to turn on the relay
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10-26-2015, 09:00 PM | #388 |
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Member#: 359175
Join Date: Jun 2013
Location: North Huntingdon PA
Vehicle:2010 Forester XT |
Nate read post 373 it explains better what I pmed you this morning
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10-26-2015, 10:33 PM | #389 |
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Member#: 270482
Join Date: Jan 2011
Location: albany ny
Vehicle:2011 turbotek fxt 11.85@117 4eat xt record? |
Wish I had a rear cig lighter but I don't have the touring model. I will have to run another wire from the fuse panel on a non fuel related ignition source. Thanks guys was wondering why my damn battery would die every winter.
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07-12-2016, 01:29 PM | #390 |
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There have been multiple ways mentioned in this post. Which way allows you to use the FPC to maintain duty cycles and not draw current while the car is off?
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07-12-2016, 08:27 PM | #391 | |
Scooby Specialist
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Quote:
It will not allow duty cycle operation of the pump but will improve voltage and current making it to the pump. In future, I will bypass the stock molex plug on pump bulkhead to further improve the condition. I set duty cycles all at 100% and use the stock FPC to fire the Bosch relay which in turn provides direct feed 12V from battery (via 4GA cable) to the pump. The ground to pump is via 10GA cable to chassis ground. By using the stock FPC to fire the relay, I maintain any stock safety features (pump prime function, power off of pump in crash etc.). The pump only receives power during prime and when engine is running with this circuit. I had been running this circuit for a couple years with zero issues (except I was still loosing pressure on top end (500 AWHP & WB 450LPH pump). This year I added a JMS FuelMAX voltage amplifier to the mix and have had some issues with the pump failing. I am still troubleshooting this but believe root cause is not related to the pump powering circuit. |
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07-28-2016, 01:37 AM | #392 | |
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Location: california
Vehicle:02 2.1 stroker fpgreen htz v9 sti 6speed |
Quote:
Is this how you rewire the fpc controller without over heating the add on relay or draining your battery ? or can you rewire it direct power from ignition to 10 pin on fpc bypassing the Oe relay fuel pump and use number 7 pin to trigger add on relay? |
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08-02-2016, 10:36 PM | #393 |
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Join Date: Nov 2014
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Vehicle:02 2.1 stroker fpgreen htz v9 sti 6speed |
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08-02-2016, 11:52 PM | #394 | |
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Vehicle:2009 wrx spark silver metallic |
Quote:
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08-05-2016, 06:38 PM | #395 |
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The JMS box works great. Only thing I wish would be the capability to set base voltage lower than the regulated 14.5v
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08-06-2016, 01:15 PM | #396 |
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Vehicle:2009 wrx spark silver metallic |
Did you get the boost activated? Jms
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08-06-2016, 03:52 PM | #397 |
Scooby Specialist
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Yes I did
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08-09-2016, 12:26 PM | #398 |
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Vehicle:2009 wrx spark silver metallic |
What are your settings if you don't mind me asking?
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08-09-2016, 08:56 PM | #399 |
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Sure, my pressure switch is set to trigger voltage increase at 10psi boost. I am using 18v max range at 50% ramp (approx 16 volts when boost us 10psi or more)
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08-15-2016, 06:02 PM | #400 |
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Join Date: Nov 2014
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Vehicle:02 2.1 stroker fpgreen htz v9 sti 6speed |
I did my rewire using relay and used the fuel pump controller ground . how hot does the fuel pump controller?. is it hot to touch or warm? I'm thinking adding a heat sink cause it get really hot .
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