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Old 12-21-2015, 10:14 PM   #426
Subaru JW
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Originally Posted by Zombie Panda View Post
Dual pumps are out of the question. If I need more volume I'll go to a larger single pump. That gets tricky though because I already have the largest in-tank pump I know of. Looks like I'll need to use an external pump.
Just wondering why are dual pumps out of the question? And where would you mount an external pump? My Tuner recommended a Radium dual pump setup for my EFR 8374 build. I would love not to have an extra tank full of fuel in the trunk, sitting right behind my Kids. Radium also has a in tank set up that looks interesting.
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Old 12-21-2015, 10:48 PM   #427
gaby
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My customers and myself have use dual pumps for years. Me personally 5 years, without problems. One of my customers, with a 580hp sti, chased several set ups end up with a dual 255s ($200 set up) after at least 3 different pumps included a Bosch set up. 2 evos with over 800 with dual 400s.
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Old 12-22-2015, 12:04 AM   #428
methaddict
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Originally Posted by Subaru JW View Post
Just wondering why are dual pumps out of the question? And where would you mount an external pump? My Tuner recommended a Radium dual pump setup for my EFR 8374 build. I would love not to have an extra tank full of fuel in the trunk, sitting right behind my Kids. Radium also has a in tank set up that looks interesting.
For my BW 8374EFR ewg setup, I went with dual Walbro 450lph in tank. Using a Fuelpro fuel pump controller for the primary and if needed have the second pump turn on and hardwired to run 100% as an auxilary which is activated within certain parameters on the AEM series 2 which if my tuner feels the need to will only be in 30+ psi of boost. I will eventually get the Radium dual pump surge tank. If Radium made a dual pump hanger for the GD I would have bought that instead of the Fullblown hanger. I removed the billet clamps at the bottom of the hanger and just used worm gear clamps to attach the Walbro 450lph pumps to the legs of the hanger.
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Old 12-25-2015, 02:16 PM   #429
Shortpersonbk
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Originally Posted by Zombie Panda View Post
I found several fuel system calculators online; however each one gives me a different answer. I'm hoping maybe you guys could help out.

I have:
ID2000 injectors
-8AN fuel supply
-6AN fuel return
Running 35psi max
Ballpark of 650whp
Fuel: e85 (e70) flex fuel
Current fuel pump: Walbro 400lph in-tank

My question: is my fuel pump adequate or undersized?

2 calculators said no and 2 said yes.

You need twin pumps for 650 on e. A single wally will not be enough.

Fuel lab sells a large intank pump that supposedly can handle 1800hp on 93. But your be looking at 7-800 for the pump if i remember correctly. I am considering using one in my miata but data is non existent on it.
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Old 03-21-2018, 11:19 AM   #430
kpineda034
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anybody know what the max power output would be for id1000's and a 255??
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Old 03-21-2018, 12:23 PM   #431
mrsaturn7085
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What fuel?
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Old 03-26-2018, 04:30 AM   #432
k_duraman
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I am running twin 340lph automotive in tank pumps. @540whp. Fuel pressure at 40-42psi at idle
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Old 03-31-2018, 06:48 PM   #433
SkyRipper
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https://scontent-tpe1-1.xx.fbcdn.net...67&oe=5B2C0050

597whp, 500lb-ft
staged twin walbro 450 in radium fuel pump hanger
at this power level, by using only one walbro 450 will have delta fuel pressure less than 220kpa @ boost 2bar (base fuel pressure set at 3bar)

with second walbro 450 trigger by hobb switch at 1.2bar, the delta fuel pressure maintain pretty constant near 270~280kpa.

Fuel is 98RON. with methanol injection.
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Old 04-01-2018, 12:07 PM   #434
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Originally Posted by SkyRipper View Post
https://scontent-tpe1-1.xx.fbcdn.net...67&oe=5B2C0050

597whp, 500lb-ft
staged twin walbro 450 in radium fuel pump hanger
at this power level, by using only one walbro 450 will have delta fuel pressure less than 220kpa @ boost 2bar (base fuel pressure set at 3bar)

with second walbro 450 trigger by hobb switch at 1.2bar, the delta fuel pressure maintain pretty constant near 270~280kpa.

Fuel is 98RON. with methanol injection.
^ Would LOVE to know more about this setup, because I'd love to personally run a staggered 450 setup in a Radium Hanger as well. Any more info?

Peace
-TurboTod
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Old 04-02-2018, 04:38 AM   #435
SkyRipper
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Originally Posted by TURBOTOD View Post
^ Would LOVE to know more about this setup, because I'd love to personally run a staggered 450 setup in a Radium Hanger as well. Any more info?

Peace
-TurboTod


Yes. Here are the mods list.
Garrett GTX3582 (gen1)
MAP short block, with Cosworth internals. Sleeved
Ported head with Cosworth 274 camshaft.
Perrin FMIC with custom piping, blow-thru MAF (for SD/MAF blending tune)
Cosworth IM, Boomba racing TB
Killer B headers, 76mm downpipe, 83mm mid-pipe and twin tail-pipe.

Regarding the fuel system;
ID 2000 injectors
twin walbro 450 in radium hanger.
RCM fuel rails and FPR kit.
second pump triggered by hobbs switch @ 1.2bar

The car is using the Plex PBC pro boost controller, and we installed a fuel pressure sensor, sending signal to the PBC pro for fail-safe protection. Since the base fuel pressure was set @ 3bar, we want to maintain the delta fuel pressure near this level during full boost as close as possible.

By using only one walbro 450... we still manage to get the 600whp output, but the delta fuel pressure drops to near 200kpa when boost hits above 2bar.
which means - when boost 2bar, the actual fuel pressure is 4bar only. it should be 5bar stable. One walbro 450 simply can't support the enough fuel flow at that boost level, and you get weird looking VE tables with this setup. Btw, the max INJ duty cycle is around 60-65%.

if you don't stage the twin fuel pumps and just let it pump all the time, you will find the base pressure can't even drops below 4bar no matter how you adjust the FPR. The twin fuel pumps just flow too much when idling and crusing. And the actual fuel pressure became non-linear during the boost, even with the largest fuel return orifice that radium supplies.

So we installed a hobbs switch and let the second pump trigger @ 1.2bar boost.

With the PBC Pro we can see the delta fuel pressure in live. When the second pump kicks in, now the delta fuel pressure raises to 2.8~2.9bar. We tried to turn the boost up to 2.3bar and fuel delta pressure still maintains pretty stable.The only problem I am facing is the fuel pressure drops between shift. It will trigger the the "fuel pressure too low" failsafe. It needs some soft of electrical device which can delay the second pump cut off for about 1-2 seconds during shift.

let me know what else you would like to know about the system.

-Mike

Last edited by SkyRipper; 04-02-2018 at 05:26 AM.
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Old 04-02-2018, 08:00 AM   #436
magicmike7
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Not too far off from first fire up for the new build.

Have a Fuelab 92902 in a Radium surge tank, 8an feed to the bay, ID 2000s, Fuelab Electronic FPR, 6an return.

Cobb flex fuel on the car, but will run ethanol 95% of the time, fully built motor and PTE Gen 2 6466, should see close to 800whp.
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Old 05-01-2018, 01:02 PM   #437
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Originally Posted by magicmike7 View Post
Not too far off from first fire up for the new build.



Have a Fuelab 92902 in a Radium surge tank, 8an feed to the bay, ID 2000s, Fuelab Electronic FPR, 6an return.



Cobb flex fuel on the car, but will run ethanol 95% of the time, fully built motor and PTE Gen 2 6466, should see close to 800whp.

Like this?
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Old 05-01-2018, 01:31 PM   #438
magicmike7
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Originally Posted by Zombie Panda View Post
Like this?
Exactly that!!! Well soon enough, my pump still hasn't arrived and i'm picking the motor up this week, should get clicking around on installing everything soon. Should have known the parts wouldn't be ready when I was lol
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Old 01-29-2019, 04:07 PM   #439
04dailydrivenSTi
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Originally Posted by THE-95-STi View Post
^^exactly I want to see somebody that has that on pump pushing over 525whp on Pump & Injection and is still going strong

any body sell the dual set-up?
I ran ~630 wheel on my 04 STI on pump, and got 80k miles out of it with good use and constant use ( daily driven and weekend track car ). Anyone over the 550 mark usually goes to a twin pump set up or a surge pump with larger lines. I did the dry surge pump route and never had any issues. Hope this helps ! can provide more info if needed
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Old 02-08-2019, 05:41 PM   #440
STIdmod712
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Originally Posted by kpineda034 View Post
anybody know what the max power output would be for id1000's and a 255??
I have that setup and my tuner said about 525 ish. I've also heard higher numbers, but I havent been dynoed.
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