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Walbro 400LPH intank pump ? Anyone got any info

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Old Jan 2, 2014 | 05:24 PM
  #496  
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Originally Posted by David Buschur
The HTA86 will outflow the 1250 injectors you have EASILY and the single 400 pump is also not enough for that turbo, if it makes the power it should.
You DID notice that I'm not running E85, correct? Not trying to be "one of those guy you hate" but how did you run a 9.0 on 1200's with race fuel? Or were the idc's really high when you did it?

Honestly, when I purchased my injectors, I was debating cause I didn't wanna go low impedance with a big injector and I also didn't wanna spend $700-800 for 2000's for an injector that'd flow more than I'd ever need on pump fuel. When I saw you running a 9.0 on 1200's with race fuel, THAT is what sold me on 1250's. True story. Lol.
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Old Jan 3, 2014 | 06:35 AM
  #497  
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I've posted full flow results of the pumps, tested by DSport Magazine, it clearly shows the power potential of the pumps and such. I'm honestly too lazy to go dig it all up but the reality of it is if you have spent enough on your car to need a 400lph pump and you are debating on a couple hundred more for our double pumper that will make whatever power level you need……well you are a bit silly.
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Old Jan 4, 2014 | 06:56 AM
  #498  
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If you say the pump won't support the flow of my turbo, I'll just go with a double pumper. Not a big issue there. Just didn't know how much power the fuel pump would support on pump gas. Which is the reason I asked here on this post.

But where you have me confused is where you're saying my 1250's won't support the flow of my turbo when clearly you've ran a 9.0 on 1200's. I thought you were running a 3586 (or larger) turbo when you did it. Can you clarify please sir??? I will never touch E85 with my injectors.
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Old Jan 5, 2014 | 05:18 PM
  #499  
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When it comes to going fast and big power..... I think I would listen to DB.

As for him running 9's on those injectors I highly doubt that most people could duplicate those results.
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Old Jan 6, 2014 | 05:21 AM
  #500  
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I am listening. But he never replied about my question concerning the injectors. If I don't ask, I won't know...and I'll never learn. Reason for the forum. Correct???
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Old Jan 6, 2014 | 07:09 AM
  #501  
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Originally Posted by V8s_are_slow
If you say the pump won't support the flow of my turbo, I'll just go with a double pumper. Not a big issue there. Just didn't know how much power the fuel pump would support on pump gas. Which is the reason I asked here on this post.

But where you have me confused is where you're saying my 1250's won't support the flow of my turbo when clearly you've ran a 9.0 on 1200's. I thought you were running a 3586 (or larger) turbo when you did it. Can you clarify please sir??? I will never touch E85 with my injectors.
Yes, I went 9.0 at 159 on gasoline with our double pumper and the 1200's just about maxed out. I guess i was thinking E85. I'd still say use the double pumper but to me it only makes sense to do it once.
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Old Jan 7, 2014 | 04:04 PM
  #502  
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I'll use the double pumper. I really wasn't debating that, since you said the 400 wouldn't flow enough. Was wondering about the injectors. But thanks for answering
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Old Jan 30, 2014 | 11:01 AM
  #503  
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Originally Posted by tony gibson
I currently run a home made double pumper with 2 intake walbros...one of these pumps is acting up. They are both unrestricted walbros. Could I run the 400 with the other walbro 255? It looks like I could just clamp them together and plug it right in. Thanks for any input!
I would like to know this also. Could we run one 255 then for our 2nd pump the 400 (the one that can handle e85)?
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Old Feb 7, 2014 | 02:49 PM
  #504  
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I'm at 550whp on E85 with a single walbro 400 - its rewired and going through dash 6 lines and no issues so far
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Old Apr 25, 2014 | 07:19 PM
  #505  
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669awhp VD dynoyet rewire 450 (which it should be the same of the 400 just sealed)and 1650cc FIC not sure how reliable is the vd though they have a mustang dyno here in El Paso thinking on taking it there but is really a heart breaker dyno lol
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Old Apr 28, 2014 | 08:33 PM
  #506  
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Awesome numbers for that pump. Is that with E85, race fuel, or some other fuel?
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Old Apr 30, 2014 | 03:02 AM
  #507  
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There's a few s2000's I have seen that are making just under 700whp on e85 with the walbro e85 version 400 pump
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Old Aug 3, 2015 | 01:31 PM
  #508  
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any new high hp results on E85 and single pump?
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Old Aug 3, 2015 | 07:33 PM
  #509  
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Originally Posted by 94AWDcoupe
any new high hp results on E85 and single pump?
Not sure if you call it high power, but MrFred is making ~570whp on E85 with a Walbro 450 (F90000267), a hard wire kit and a -6AN feed line with the OEM FPR.
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Old Aug 3, 2015 | 09:00 PM
  #510  
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Originally Posted by Erik@MIL.SPEC
Not sure if you call it high power, but MrFred is making ~570whp on E85 with a Walbro 450 (F90000267), a hard wire kit and a -6AN feed line with the OEM FPR.
Not at 570 whp yet, but hope to be there eventually. Currently around 535 whp. I can monitor rail pressure and can see net injector pressure falling off under high flow, high boost conditions due to the relief valve being triggered. My guess is that the new high pressure relief valve W450 at 14 V is good for maybe 575 whp before it can no longer sustain 3 bar rail pressure.
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