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Does the double pumper require an FPR?

   
Old Jan 20, 2013, 02:37 PM
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Does the double pumper require an FPR?
Hey guys

Will I need an adjustable FPR if I install the double pumper on a stock fuel system with 1200cc injectors on e85? I know I will need one of I go with a 400lph so that is factoring into my decision. I'd like to keep the stock FPR if I can. Thanks guys

Fred
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Old Jan 20, 2013, 02:45 PM
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twin 255 pumps with the reliefs pushed in ''as most BR DP'ers come'' you wil lbe just fine with the stock FPR.
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Old Jan 20, 2013, 03:23 PM
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Sweet thanks Dan! The double pumper will give me more headroom so that's great
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Old Jan 20, 2013, 04:12 PM
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RS: With the BR Double-Pumper, the secondary pump is staged, as opposed to some other double pumpers wherein both pumps are on full time even at idle.
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Old Jan 20, 2013, 07:03 PM
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That makes sense. Thanks sparky!
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Old Jan 20, 2013, 07:10 PM
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Will I need to Rewire the pumps for more voltage to get the double pumper to work properly?
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Old Jan 20, 2013, 07:22 PM
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Interesting thread. Never know when to get a better FPR or fuel rail for that matter.
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Old Jan 20, 2013, 07:29 PM
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I was told i wouldnt need a fpr with a 400lph on the same size injectors. are you posative you need a fpr for a 400lph?
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Old Jan 20, 2013, 07:58 PM
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Originally Posted by RSGuy
Will I need to Rewire the pumps for more voltage to get the double pumper to work properly?
What turbo, Fred?
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Old Jan 20, 2013, 08:32 PM
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Sparky, I'm running the ATP stock-location gt35R
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Old Jan 20, 2013, 08:35 PM
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Sktng22, from the research that I've done so far, most of the guys who go with a 400lph overrun their stock fuel system. Also, the walbro dealers/vendors have a disclaimer that says the AFPR is highly recommended with the big pump.
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Old Jan 21, 2013, 03:11 PM
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no rewire needed either unless its twin 400s. 255s your fine
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Old Jan 21, 2013, 09:09 PM
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Originally Posted by evodan2004
no rewire needed either unless its twin 400s. 255s your fine
Don't you mean just the opposite, dan? That is, with the lower volume 255's you may need the 13.8 volts. Probably, I am not understanding your statement though.
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Old Jan 21, 2013, 09:26 PM
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Originally Posted by sparky
Don't you mean just the opposite, dan? That is, with the lower volume 255's you may need the 13.8 volts. Probably, I am not understanding your statement though.

With twin 255s a re wire is not needed. I am not saying it won't help but its not needed. Many guys running without a rewire. There is plenty of fuel in the system.

400+lph pumps seem to need one. Why I don't know. Maybe the pump is drawing to much for the factory wire? Or is requiring more volts to run properly? Again Idk
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Old Jan 21, 2013, 09:48 PM
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Thanks, Dan.
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