Fuel Pump Upgrade?

[DrifterProdigy85]

I want to run a large external fuel pump like an Aeromotive A1000. Now my question is can i take the feed line from the Walbro pump i have intank and run that to the Aeromotive pump to feed it fuel instead of doing a surge tank?

[kentuckyslider]

yes, or you could do the bosch 044 without the surge tank. If you're upgrading fuel systems the 044 fed by a walbro should be enough for E85 if you go to 1200cc+ injectors. If I switch to stand alone and upgrade fuel systems it will be a E85 tune. It is everywhere in Kentucky and 93 is going up every day. When the dow it's 10000, gas will hit $3+ a gallon again.

[Solow240sx]

Not tryin tothread jack or anything but could one of u guys tell me if a single walbro 255 will provide enough fuel to run 96lb msd injuectors??

[spanishricer]

Determining a fuel pump's adequacy can depend on a variety of factors. Namely...how much horsepower you intend to make, and what fuel pressure the pump will have to sustain to generate the horsepower.

[kentuckyslider]

Not tryin tothread jack or anything but could one of u guys tell me if a single walbro 255 will provide enough fuel to run 96lb msd injuectors??

Not with 500+whp and 35R. I am close to it's limits with the GT30R i would assume. I would say go 044 bosch and a wally or denso TT supra pump.

[spanishricer]

Or just do dual Bosch 044's and call it a day.

[Seishuku]

Bosch 023 intank pump is pretty sweet too, that's what I use.

[DrifterProdigy85]

I need a big enough pump setup for 750hp using e85. The 044 is an inline pump good for 685hp but thats gas. The 044 wont flow enough for much over 475hp with e85. If you have an intank feeding an inline pump, it doesnt add the flow of both pumps, does it? I would think the intank pump just feeds the inline pump and all the flow to the engine is provided by the inline pump itself.

[spanishricer]

Running 2 pumps in series bumps the flow volume a bit, but bumps the pressure capability significantly.

Running 2 pumps in parallel bumps the flow significantly but has no affect on pressure capability.

The Bosch 044 can already do 100psi base pressure by itself, so dual in-tank 044's is the way to go.

[DrifterProdigy85]

Ok i see. So what would the flow rate be with a Walbro Intank and a Bosch 044 Inline? It sounds like this would be plenty for my goals.

[spanishricer]

Ok i see. So what would the flow rate be with a Walbro Intank and a Bosch 044 Inline? It sounds like this would be plenty for my goals.

I don't think there is a specific formula or calculation to determine the exact flow rate...but you might get 40-50% additional flow. Not as much as running two pumps in parallel.

[kentuckyslider]

2 walbros intank is good for 900whp on gas. I've got a friend running 2 walbros and a E85 tune on his 1G DSM and he said it's good for 700 on E85.

[DrifterProdigy85]

Looks like ill be good either way. Thanks guys for the help. Im gonna start planning everything out now.

[Solow240sx]

How would u hook dual walbros up in the tank in a parallel?? Also would u walbro intanks flow more then a walbro intank and a bosch 044 inline??

[DrifterProdigy85]

Reading through the Supra Forums i found the walbro pumps flow pretty good but they dont handle higher pressure very well. The guys were mentioning that they would lose fuel pressure when boosting for a long period of time. Im leaning toward the Walbro intank and the Bosch 044 inline now. It seems it has the flow to handle the needs and the Bosch pump is good for handling alot of pressure.

[Solow240sx]

HMMM, im kinda torn now i was just thinkin about running dual walbro intakes, but dont wanna have any problems, so maybe its better to run my walbro intake to feed a bosch 044?? Also has anyone every ran a walbro intake and a external walbro 255 inline?? would this have the same problem?? And what kinda psi are they falling off at??

[spanishricer]

If you're not aiming for more than 600whp on gas, I would just run a single Bosch 044 and be done with it. A single Bosch can handle the required fuel flow, and higher fuel pressures.

[DrifterProdigy85]

I talked to James Evans of Evans tuning and he says the Bosch 044 Inline and Walbro Intank will be enough fuel to get 700hp on e85. Next is how should i go about running the fuel lines? What size would be best? Also should the fuel pickup be made larger for more flow?

[GTR PrYdE]

I talked to James Evans of Evans tuning and he says the Bosch 044 Inline and Walbro Intank will be enough fuel to get 700hp on e85. Next is how should i go about running the fuel lines? What size would be best? Also should the fuel pickup be made larger for more flow?

bringing it back..

I disagree.

A 044 flows around 300lph max, which is only ~15% more flow than a walbro, I can see it making 500whp on e85, no where near 700..

I'd believe 700whp on gas like c16

I've been searching this issue with e85 on our cars, and it seems we need dual bosch 044's or a weldon fp setup w/ surge tank for over 500whp..

This is with the ID1000cc injectors, suitable for 100 base fp.

[willteam180s13]

thats what i run in my setup with braded earls lines i just got retuned on pfc 625whp 530tq

[GTR PrYdE]

thats what i run in my setup with braded earls lines i just got retuned on pfc 625whp 530tq

What do you run? Fuel?

[jr_ss]

bringing it back..

I disagree.

A 044 flows around 300lph max, which is only ~15% more flow than a walbro, I can see it making 500whp on e85, no where near 700..

I'd believe 700whp on gas like c16

I've been searching this issue with e85 on our cars, and it seems we need dual bosch 044's or a weldon fp setup w/ surge tank for over 500whp..

This is with the ID1000cc injectors, suitable for 100 base fp.

Using the 044 with the Walbro will yield higher results, than what you would expect with the 044 by itself. The 300lph that the 044 is rated at is based on the pump working alone. Using the Walbro to feed the 044, you'll be able to push more LPH. It may not be 700hp worth of flow, but it'll be much higher than the 500hp figure you've given.

Supra guys with dual Walbro's are pushing 800-900 rwhp easy, including my good friend.

[willteam180s13]

vp112

[GTR PrYdE]

I was arguing that much power with E85, on gas I completely agree that you can make a retarded amount of power.

This isn't for the 044 but an external inline walbro flows just a little less than a 044, and here it is combined with an intank walbro.

Look at the "walbro intank with inline walbro series"

[Solow240sx]

Is anyone on this forum actually running the walbro intank, and bosch 044 inline?? I have a walbro in my tank and just got my inline bosch 044 mounted, just need to wire it and run the line, but i was wandering if i should upgrade the fuel line to the rail?? I was thinkin about running stock size fuel line to the pump since -06a/n braided line fits great on it, and then running -8a/n from the bosch pump up to the rail?? Would this work or should i just run -6 a/n line the hole way??

[Solow240sx]

Anyone have any info??

[GTR PrYdE]

Probably not... and I won't be able to do it for sometime as well.

The 044 is -6/-6 and depending on rail it'll probably be -6 too no?

honda-tech has several people running that setup...