street ported and.........
04-24-02, 10:15 PM
#1
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street ported and.........
just wondering if i need a fuel pump? i know the stock injectors are fine but do i need a new fuel pump?
if i do will the pettit unlimited control the fuel pump? i know it cant control aftermarket injectors.
if i do will the pettit unlimited control the fuel pump? i know it cant control aftermarket injectors.
04-25-02, 01:41 AM
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Re: street ported and.........
Originally posted by violator
just wondering if i need a fuel pump? i know the stock injectors are fine but do i need a new fuel pump?
if i do will the pettit unlimited control the fuel pump? i know it cant control aftermarket injectors.
just wondering if i need a fuel pump? i know the stock injectors are fine but do i need a new fuel pump?
if i do will the pettit unlimited control the fuel pump? i know it cant control aftermarket injectors.
04-25-02, 02:27 AM
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i have the following mods:
-blitz nurspec cb
-apexi fmic
-stock turbos
-hks mp/dp
-street port
just bought the car with the following mods and want to make it more reliable. i know i need a ast, new rad, ecu, and a boost controller.
-blitz nurspec cb
-apexi fmic
-stock turbos
-hks mp/dp
-street port
just bought the car with the following mods and want to make it more reliable. i know i need a ast, new rad, ecu, and a boost controller.
04-25-02, 03:22 AM
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If you limit boost to 12 psi, you will not need a fuel pump or bigger injectors. Although at only about $250 and a half hour of time, installing the Nippon Denso pump is not bad insurance. If you run over 12 psi, you should really get larger secondary injectors and the fuel pump. Also, if you get the PowerFC, you won't need a boost controller.
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04-25-02, 11:06 AM
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Originally posted by rynberg
If you limit boost to 12 psi, you will not need a fuel pump or bigger injectors. Although at only about $250 and a half hour of time, installing the Nippon Denso pump is not bad insurance. If you run over 12 psi, you should really get larger secondary injectors and the fuel pump. Also, if you get the PowerFC, you won't need a boost controller.
If you limit boost to 12 psi, you will not need a fuel pump or bigger injectors. Although at only about $250 and a half hour of time, installing the Nippon Denso pump is not bad insurance. If you run over 12 psi, you should really get larger secondary injectors and the fuel pump. Also, if you get the PowerFC, you won't need a boost controller.
so ur saying that even with the street port i dont need a fuel pump unless i run over 12psi?
the stock turbos prob cant take much more then 12 psi hehe so im just gonna leave it at 12psi.
Last edited by violator; 04-25-02 at 11:09 AM.
04-25-02, 01:04 PM
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Originally posted by violator
my question now is if i get a fuel pump, get just like a pettit be good enough to control it? or do i need a power fc?
so ur saying that even with the street port i dont need a fuel pump unless i run over 12psi?
the stock turbos prob cant take much more then 12 psi hehe so im just gonna leave it at 12psi.
my question now is if i get a fuel pump, get just like a pettit be good enough to control it? or do i need a power fc?
so ur saying that even with the street port i dont need a fuel pump unless i run over 12psi?
the stock turbos prob cant take much more then 12 psi hehe so im just gonna leave it at 12psi.
Actually, I forgot about the streetport. I would just get the fuel pump, they're not that expensive. Technically, you don't need a higher flowing pump unless you upgrade to larger secondaries.
04-25-02, 01:30 PM
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fuel pump is a waste if only runnings 12 psi of boost. it is also useless unless, as previsouly stated, you bump fuel pressure or larger injectors.
Furthermore, I wouldn't do any of that without a stand alone. upgraded ECUs are way to expensive when the day is over.
Furthermore, I wouldn't do any of that without a stand alone. upgraded ECUs are way to expensive when the day is over.
04-25-02, 02:24 PM
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so whats the verdic? one says yes one says no. im guessing that u dont need it but as rynberg stated it wouldnt hurt i prob might as well get it.
but i should prob get a rad first because of the FMIC the stock rad will not get enough air flow right?
but i should prob get a rad first because of the FMIC the stock rad will not get enough air flow right?
04-25-02, 03:27 PM
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it can hurt your pocket book. technicaly, practically, fundamentally. anyway you want to say it, if you don't upgrade your fuell system you don;t need a fuel pump. it is even debateable when you upgrade to say 1200cc.. that is why a fuel pressure gauge is nice, you can see when you need a new one. no internet guesing with the gauge.
04-25-02, 09:45 PM
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kool thanks kz1. another question while im getting some important tips; 
what efficienicy are the stock turbos/injectors running at
if i use 12psi??
what efficienicy are the stock turbos/injectors running at
if i use 12psi??
04-26-02, 08:01 AM
#15
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Originally posted by lane_change
Mine inj. duty cycle runs anywhere from 88-98% @ WOT. Mods below.
Mine inj. duty cycle runs anywhere from 88-98% @ WOT. Mods below.
I have talked to ray @pfs and his advice was to upgrade the fuel pump and as long as you are not boosting over 15psi you will be fine on stock inj.i will never run that well maybe on race fuel but that would be it. you can run a high duty cycle but dont do it for like a minute or so.if you are just getting in a street race you will do it for what 4 or 5 seconds!!!
ryan
04-26-02, 12:28 PM
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did you get your maps tuned at the same time, because adding a fuel pump will not reduce inj. duty. maybe you tried it on two differernt days with changign temperatures. The ecu will not know the fuel pressure, thus will not make inj. duty go up to compensate for falling pressure. Now, if you took fuel out, that is differnt story.
I added my denso pump and it did jack **** as suspected, it offered nice insurance when I upgraded to 1300cc injectors though.
I added my denso pump and it did jack **** as suspected, it offered nice insurance when I upgraded to 1300cc injectors though.
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