Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

upgrading my fuel pump on my 93 cx, would i need to change my fuel rail & injectors?

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Old Apr 20, 2004 | 05:59 PM
  #1  
JDMvtecDRAGSTA's Avatar
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From: SoCAL
Default upgrading my fuel pump on my 93 cx, would i need to change my fuel rail & injectors?



im about to install my 255LPH walbro fuel pump
my current fuel setup on my 93 civic CX HB with b16a is:

-stock obd1 gsr injectors
-stock ITR fuel rail
-B&M Fuel pressure regulator (50-55psi)
-Erick's racing full race chipped p28 ECU

would it be okay to run this setup w/the fuel pump?
i just dont wanna mess anything up.
thanks

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Old Apr 20, 2004 | 11:41 PM
  #2  
KillerEJ's Avatar
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Default Re: upgrading my fuel pump on my 93 cx, would i need to change my fuel rail & injectors? (JDMvtecDRA

Im sure you'll be fine... if you're motors stock, I doubt you will gain any hp raising the fuel pressure, in fact 55psi might be a bit rich. And by the way, all B-series injectors are the same cc's. 240. Get an air fuel ratio gauge.
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Old Apr 20, 2004 | 11:45 PM
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Default Re: upgrading my fuel pump on my 93 cx, would i need to change my fuel rail & injectors? (JDMvtecDRA

no need to change fuel rail or injectors, in a matter of fact, i think 255LPH is over kill... stock integras are just fine.

btw are'nt you burning gas like crazy with your fuel pressure set that high? geeze...im getting like 23mpg and im straight bitchin!....mine is set at 48psi, but tuned down with the vafc
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Old Apr 20, 2004 | 11:56 PM
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Default

seriously, get a stock regulator, and a stock b-series pump (137 lph) (fyi d-series pumps are 79 lph)
all b and d series injectors are 240cc's
stock fuel rail flows plenty of fuel
if you must put a really high-flow pump in, don't get anything bigger than a walbro 190lph unit. but seriously, all that fuel pressure and fuel is just retarded. i bet i could make your car sooooooo much faster in an hour by takin away a lot of fuel. added fuel doesn't add horsepower man....... it takes it away

the optimum fuel setup for you is a 134lph b-series intank pump, stock b-series fuel rail, stock 240cc injectors, and the pressure regulator set at 43 psi static pressure. let that ecu add and subtract some fuel where it wants to.
you will gain the most power by doing exactly this
-Shawn
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Old Apr 21, 2004 | 12:08 AM
  #5  
rxse7n
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Yeah you definitely dont need that much fuel for what you got. When I first had my B18 in, I was still running on the little d series pump and it was fine. Switched out just to be safe, but even 79lph was supporting a stock b18. Save your money for some cams or something.
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Old Apr 21, 2004 | 10:22 AM
  #6  
JDMvtecDRAGSTA's Avatar
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Default Re: (rxse7n)

sorry for the vague details

i have a JDM b16a sir2 motor

the head has iceman CAI, jun stage 3 cams, skunk2 cam gears, itr valves, portflow retainers & springs, itr manifold port-matched to a RPM 70 mm tb, JDM itr 4-1 header.
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Old Apr 21, 2004 | 09:56 PM
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DOHCtorTHRUST's Avatar
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Default Re: (JDMvtecDRAGSTA)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMvtecDRAGSTA &raquo;</TD></TR><TR><TD CLASS="quote">sorry for the vague details

i have a JDM b16a sir2 motor

the head has iceman CAI, jun stage 3 cams, skunk2 cam gears, itr valves, portflow retainers & springs, itr manifold port-matched to a RPM 70 mm tb, JDM itr 4-1 header.</TD></TR></TABLE>

yet its still overkill... stock integra is fine, but if you still want to opt an aftermarket fuel pump the 190 is just fine for NA... the 255LPH pumps are best suited for force induction vehicles
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Old Apr 21, 2004 | 11:22 PM
  #8  
JDMvtecDRAGSTA's Avatar
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From: SoCAL
Default Re: (DOHCtorTHRUST)

too late i already got a 255lph
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Old Apr 21, 2004 | 11:24 PM
  #9  
99blackcivicSi's Avatar
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From: Alexandria, Va, USA
Default Re: (JDMvtecDRAGSTA)

HOLY **** that T/B is huge for a all mota car! put the 255 in since you already have it not gonna hurt anything
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Old Apr 22, 2004 | 01:02 AM
  #10  
ALLBLINE's Avatar
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From: 425 & 808
Default Re: (99blackcivicSi)

If you can return it. If not there is always ebay,imho slightly overkill unless your gonna be spooling soon. Nice fuel pump anyway.
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