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Dual Walbros No Hobbs

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Old 04-05-2010 | 10:17 AM
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What about the Bosch 044? Anybody running one of them?

Bosch 044 Fuel Pump Specs:

Bosch Part Number: 0 580 254 044
Minimum Current: 12 Volts
Operating Pressure: 72.5 PSI (5 Bar)
Minimum Flow @ Outlet: 80 GPH (300 LPH)
Fuel Pump Location: In-Line
High Temperature Reduction: 8 GPH (30 LPH)
Weight: 1030 Grams (2.27 Pounds)
Old 04-05-2010 | 12:03 PM
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I'm running the dual wabro pumps with the hobbs switch. second pump comes on at 4 pounds of boost. I have room to add a third one if needed.
Old 04-06-2010 | 08:54 PM
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Originally Posted by 1_bad94Camaro
I'm running the dual wabro pumps with the hobbs switch. second pump comes on at 4 pounds of boost. I have room to add a third one if needed.
How do you ahve that much room? Are you running a return setup? It sounds like once you hit a certain point, you have to bite the bullet and spend the money to upgrade your fuel system so that it can handle the additional HP. Nothing available that's a direct swap or drop in and go type thing. I'm not the most mechanically inclined which is why I'm hesitant to mod the bucket and go duals w/hobbs. Thanks for all the comments!
Old 05-06-2010 | 02:28 AM
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I have a gauge for that
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I wonder what would happen to the stock regulator if you threw the stock pump and a walbro 255 in parallel for a returnless system...
Old 05-07-2010 | 10:11 AM
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Originally Posted by Atomic
I wonder what would happen to the stock regulator if you threw the stock pump and a walbro 255 in parallel for a returnless system...
it would make a tahoe go 12.33. lol thats what i have on mine. hobbs for the walbro though. if you run them both while not in boost the pressure is up there. i converted mine to return style awhile back. i think if my return line was bigger i could run both pumps on all the time, but i'm good with my hobbs switch.
Old 05-07-2010 | 10:27 AM
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Their are quite a few of us running single in tank 044's with no problems.
Old 05-07-2010 | 11:45 AM
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i run dual walbros no prob and no hob switch
Old 05-07-2010 | 11:49 AM
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I have a gauge for that
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im getting roughly an 8psi drop at wot with just the single walbro, and adding the stock pump back would be free since I already have it
Old 05-07-2010 | 05:22 PM
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I just converted over from a returnless style.

current set-up;
255 intank
-8feed line
044 on the frame rail w/ jayracing fp wiring
filter
fast fuel rails
-6 return
aeromotive fpr
-6 back to the tank

the swap was easy, there is soo much room in the bucket now since the stock regulator and filter are gone
Old 05-13-2010 | 08:38 PM
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Originally Posted by sharpshooter
Their are quite a few of us running single in tank 044's with no problems.
Is this on a returnless system? Did you have to mod the bucket or did it drop right in? Anything else that you have to do?

Originally Posted by Most Hated
i run dual walbros no prob and no hob switch
Same questions as above...Using the stock regulator?


I've been putting this off and running on low boost until I figure out a solution. Thanks for the feedback!
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