Car is dead at PBIR

[boatmangc]

Anyone have a Aeromotive 340 or equivalent pump.
I'm stuck.

[Gryphonzus]

I have a pump out of a 2008 Mustang GT.

[Cobra25]

I meet up with Gary late this morning and dropped off 2 fuel pumps ,hose's, clamp's & a electric connector.

[boatmangc]

Zoltan you are the man!!
Special thanks to MikeDMechanic for trekking me all over south Florida.

I found a blown Boost A Pump Fuse, I am pretty sure my Aeromotive 340 is on it's way out.
Made it back yo hotel on its own power, I have 1/2 tank of race fuel in it, I will top it off with fresh 93 and drive like gramma all the way home tomorrow. (fingers crossed).

[Zack]

Zoltan you are the man!!
Special thanks to MikeDMechanic for trekking me all over south Florida.

I found a blown Boost A Pump Fuse, I am pretty sure my Aeromotive 340 is on it's way out.
Made it back yo hotel on its own power, I have 1/2 tank of race fuel in it, I will top it off with fresh 93 and drive like gramma all the way home tomorrow. (fingers crossed).

You don't need a BAP with a 340 pump.

WAAAAAAAAY too many amps.

[boatmangc]

You don't need a BAP with a 340 pump.

WAAAAAAAAY too many amps.

Please elaborate sir.
Current setup
Aluminator high compression
16 Lbs boost
60 Lb injectors
Aeromotove 340
KB Boost A Pump
Stock fuel lines
477 RWHP

[Zack]

Please elaborate sir.
Current setup
Aluminator high compression
16 Lbs boost
60 Lb injectors
Aeromotove 340
KB Boost A Pump
Stock fuel lines
477 RWHP

A 340 pump at 13.5 volts will draw between 13 and 18 amps IIRC.
Add 4 volts to the pump, and increased fuel pressure under boost and you are drawing a lot of amps.

Have you at least ran an 8ga wire from the battery back to the trunk, and ran the pump off a relay?

[boatmangc]

A 340 pump at 13.5 volts will draw between 13 and 18 amps IIRC.
Add 4 volts to the pump, and increased fuel pressure under boost and you are drawing a lot of amps.

Have you at least ran an 8ga wire from the battery back to the trunk, and ran the pump off a relay?

That would be a negative, It is part of the plan when I get it home though, I already have 2 Ga in the trunk for my amp and when I am using lots of fuel I am not using the amp, some music is better than others!
I just reread the thread about the 340 needing beefier wiring and had expected to do it when I got 'er home.

So You don't think I need the KB? or it is OK with heavier wiring.
IIRC Aric at Injected rewired the KB when I barfed the 1st motor and I think they used #8

[Zack]

You 'shouldnt' need a BAP with that pump, at your power level.

Are you running race gas or E85 with that compression and boost?

[boatmangc]

Methanol all the time and race gas when I'm beating on it

Meth comes in at 9 lbs of boost

[boatmangc]

By the way Zack, it's good to have you on board again!

[Zack]

By the way Zack, it's good to have you on board again!

Thank you sir. :beer:

[RacerX]

I datalogged my 340 Aero this past year with the BAP off and it was @ 95% dc. I'm at 516rwhp. Upgraded wiring and FPDM. Running on the rich side, 9:1cr, 60lbrs, 18 to 19psi depending on air density. I turned the BAP back on a little just for a little overhead until I upgrade the fuel system even more. :beer:

[LANDY]

Past experience here, BAP's seem to kill A340's prematurely.

[MOTOWN]

Past experience here, BAP's seem to kill A340's prematurely.

When will people learn boost a pumps are nothing more than a junk/bandaid fix that will eventually burn up the fuel pump, and leave you on the side of the road.

[boatmangc]

When will people learn boost a pumps are nothing more than a junk/bandaid fix that will eventually burn up the fuel pump, and leave you on the side of the road.

I'm learning that now….
My BAP is turned WFO

[Zack]

You will never hurt a Walbro pump with a BAP, EVER.
And Im pretty sure Walbro makes all OEM pumps.

[Vortech347]

Zoltan you are the man!!
Special thanks to MikeDMechanic for trekking me all over south Florida.

I found a blown Boost A Pump Fuse, I am pretty sure my Aeromotive 340 is on it's way out.
Made it back yo hotel on its own power, I have 1/2 tank of race fuel in it, I will top it off with fresh 93 and drive like gramma all the way home tomorrow. (fingers crossed).

They are crap. Not only will a BAP kill them but combined with a BAP will pull and INSANE amount of amps that will melt factory wiring/plugs in no time. You can get better pumps for a lot cheaper. Throw in an AEM 320 (100$) or Walbro 400lph ($100) With the HP level my fox was at I shouldn't have needed a BAP. But I did. After 5000rpm my fuel pressure would drop like a rock from 50 to 30psi. With a -8 fuel system. I NEEDED a BAP. Threw in a Walbro 400. Took the BAP out. 50psi all the way to shifting.

The local preferred speed shop here won't even install the Aeromotives anymore because he's sick of having come backs and them not delivering what they should.

Walbro's are the ****NIT and are the old faithful of fuel pumps.

[boatmangc]

Great input guys
Trying to limp it home now
Fuel pump duty cycle at 28 % at 60 mph planning on stopping every 50 mikes for a cool down


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[Zack]

AEM 320? Hmm thanks for that suggestion!

A Walbro 400 has been proven not to work in a returnless system.
The pressure is way too high just idling.. Mike M had one in and had to remove it.

[Zack]

Great input guys
Trying to limp it home now
Fuel pump duty cycle at 28 % at 60 mph planning on stopping every 50 mikes for a cool down


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You don't need to limp it if you are just driving normally

[JBeezy]

Turning BAP off now. I never see over 5 psi boost anyway.


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[Vortech347]

AEM 320? Hmm thanks for that suggestion!

A Walbro 400 has been proven not to work in a returnless system.
The pressure is way too high just idling.. Mike M had one in and had to remove it.

The shop here has been having very good results replacing the 340 users with the AEM version and having great results in the return-less stuff. That is his usual go-to for the comebacks/failures/loosing pressure.

I believe there is some serious voodoo involved with the returnless fuel tables in the tune to dial it in and make the 400 work but I'm not that advanced with the SCT stuff yet. So can't say how. I know its not "supposed" to work but back in early 05' when Vortech first came out with their blowers for the 05' stangs they included a 255 high pressure Walbro. Its ran great for 9 years and almost 40k in my dad's car. Could be a fluke though.

[CWright]

As of right now I don't even have a BAP installed. Hasn't been needed. I'm running Twin GT Supercar pumps. Now, this is all about to change since I'm going return style with the increase in power.

[Vortech347]

Zack, you should hear two of the 400lph's in a return system on at idle. The regulator sounds like a washing machine. We did an install in a 2v KB car making 700rwhp. We wired up the second pump to come on after 4psi. The amount of fuel those move in such a small package is awesome.

[Zack]

Zack, you should hear two of the 400lph's in a return system on at idle. The regulator sounds like a washing machine. We did an install in a 2v KB car making 700rwhp. We wired up the second pump to come on after 4psi. The amount of fuel those move in such a small package is awesome.

I have 3 external GSS 392's on my black car, and the sound is indeed insane.
Then I got smart and only ran 1 full time, the others off boost. :up:

I have twin 255's in the Turbo car with no issues. I will install twin E85 AEM pumps in March for my E85 tune, thanks again for the suggestion.

[MOTOWN]

You will never hurt a Walbro pump with a BAP, EVER.
And Im pretty sure Walbro makes all OEM pumps.

If the correct pump is used for the correct application you dont need a Kill a pump anyhow (with upgraded heavy gauge wiring).

[Zack]

If the correct pump is used for the correct application you dont need a Kill a pump anyhow (with upgraded heavy gauge wiring).

Keep in mind no pump was offered years ago to handle big power. That's why a BAP was always used. I still see no harm in them

[boatmangc]

Made it home safe and sound.
By baby I just meant easy acceleration and speed limit cruise control trip. Yawn.

Now to,order another pump.
Obviously not another Aeromotive

[LANDY]

I was referring to the A340 pump. I have ran BAP's in all my cars with GT pumps with crazy power and never had a problem

[Cobra25]

Gary glad to hear you got home safe. I had twin GT500 pumps with a BAP in mine a while back & less than 2 months later one of the GT500 pumps failed. Now I run Twin Areomotive 340 pumps with out a BAP & a return style fuel system with no problems.

[boatmangc]

Gary glad to hear you got home safe. I had twin GT500 pumps with a BAP in mine a while back & less than 2 months later one of the GT500 pumps failed. Now I run Twin Areomotive 340 pumps with out a BAP & a return style fuel system with no problems.

Thanks Zoltan, I will return your pumps. It was very kind of you to meet me and loan me parts.
Please, PM me your shipping address

[camelgrundle]

Maybe I should unhook my Bap with the aero 340. Don't have a kb but a vortech Bap and no problems but don't want any lol.

[NATEHAWK]

My setup is 2 GT 40 fuel pumps, modded FPDM, all wires are upgraded with a 40amp boost a pump wired pre FPDM. I drove my car with no problem, parked it and now when I start the 30amp fuse blows that's connected inline to the boost a pump. I checked the grounds and that was fine. Could this be a bad fuel pump? bad boost a pump? Bad FPDM? I tried to let the car sit and replace the fuse but no luck. I'm going to swap out to my factory fpdm right now so I can rule out that. This car doesn't get beat on nor is a daily driver so this just happened out of no where. Any help or suggestions are welcomed.

[JohnE]

Make sure you have no melted wiring as well. Get a volt meter out and trace the root cause down.

[NATEHAWK]

Yea im going to pull out my spare and check the wires.....I have 4 wires ran up to my truck bed so Im thinking i have one pump that may be on the way out I can separate the pumps and try to see which is bad from there.....I'll hot wire one at a time to just listen for the whine to start.....I tried this before but at the modified FPDM so im testing both pumps.... If its a bad pump im going to switch out to AEM 320's....I think one of these should do with the BAP......Which is the correct one's to order center or offset?

[Blackmobile]

The 11141 and 11142 are the offsets which is a direct replacement for the Marauder style stock pump, and the 11140 is the center inlet which is the one I'm running with since it has a larger inlet opening. No problems running the center inlet IMHO.


Yea im going to pull out my spare and check the wires.....I have 4 wires ran up to my truck bed so Im thinking i have one pump that may be on the way out I can separate the pumps and try to see which is bad from there.....I'll hot wire one at a time to just listen for the whine to start.....I tried this before but at the modified FPDM so im testing both pumps.... If its a bad pump im going to switch out to AEM 320's....I think one of these should do with the BAP......Which is the correct one's to order center or offset?

[NATEHAWK]

I went with the 11142


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