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Registered
Join Date: Feb 2005
Location: Portland
Posts: 845
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EFI fuel system.....
Hey guys,
What are your thoughts on using factory fuel pumps with my EFI conversion. Can it be done? Do the OEM pump have horsepower limitations like the CIS system does? I am trying to figure out budget wise if I can wait a litte bit before I go to the Aeromotive A1000 pump. Thanks..................................Chris 
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77 930 "P Zilla" 3.2 Litre w / EFI conversion |
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06-03-2007, 07:36 PM
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Navin Johnson
Join Date: Mar 2002
Location: Wantagh, NY
Posts: 8,787
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Yes you can use the factory fuel pumps. Depending on how much HP you want to extract from your engine they will work fine
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Don't feed the trolls. Don't quote the trolls  http://www.southshoreperformanceny.com '69 911 GT-5 '75 914 GT-3 and others |
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06-03-2007, 07:58 PM
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Join Date: Jul 2003
Location: Port Macquarie Australia
Posts: 510
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I'm using the factory pumps on my EFI setup. EFI runs at a lower pressure than CIS and the pumps can therefore flow more fuel
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2008 BMW 320i 2006 Mercedes ML320 2004 Mercedes ML270 cdi 1998 Porsche Boxter 1988 Porsche 930 Targa (sold) |
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06-04-2007, 02:48 AM
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Factory original fuel pumps on mine with 72# injectors and 505 rwhp.
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Kirk Crashed: Silver 1992 Turbo S2 Sold: '86 930 minor mods; '94 3.6 Turbo; '85 Euro 930 (3.2 Intake, Tec3r EFI, TwinPlug, Garrett Turbo, JE 8.1 Pistons, 505 rwhp) |
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06-04-2007, 05:06 AM
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I used the factory pumps but I did replace 100% of the fuel lines. I used the OEM lines through the tunnel and braided stainless for everything else.
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2014 Cayman S (track rat w/GT4 suspension) 1979 930 (475 rwhp at 0.95 bar) |
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06-04-2007, 08:05 AM
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Join Date: Jan 2003
Location: Langley,B.C.
Posts: 12,002
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David, what types of connector/adapters did you use to go from where the factory lines exit the tunnel to what I pressume is -6 braided?
Cheers
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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06-04-2007, 08:55 AM
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For the -6 braided lines to stock lines I bought fittings from www.batinc.net
If I remember correctly, they're 14mm/-6 fittings.
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2014 Cayman S (track rat w/GT4 suspension) 1979 930 (475 rwhp at 0.95 bar) |
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06-04-2007, 10:07 AM
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1985 Porsche 930 3.3 turbo
1979 Porsche 930 3.4
