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how much power can the stock fuel system handle?

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Old 03-19-2010, 01:12 PM
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Default how much power can the stock fuel system handle?

this is just out of curiosity, i know at the rate im goin my car has plenty of time before i have to upgrade my fuel system, but when do you have to change your fuel system?
thanks
Old 03-19-2010, 01:39 PM
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on 2000 up cars, injectors will need upgraded at ~400RWHP naturally aspirated. don't even think about not changing something by going forced induction.

you will need a racetronix PnP kit (255 Lph pump) WITH WIRING harness above 450RWHP naturally aspirated ??

forced induction you will want to go with a fuel pressure regulator at the rails & probably 42# or larger injectors above ~500RWHP
Old 03-20-2010, 11:23 AM
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wow thanks thats good to know, do you know by any chance when 98's should upgrade the injectors b/c i plan to be at 400 rwhp soon
Old 03-21-2010, 09:38 AM
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Originally Posted by jts98z28
wow thanks thats good to know, do you know by any chance when 98's should upgrade the injectors b/c i plan to be at 400 rwhp soon
upgrade them. <---- period and before you run the car, get a TUNE with those new injectors. I honestly recommend getting 36# or larger injectors to start out with. that gives you plenty of breathing room for making ~450rwhp.

I ran 42# injectors naturally aspirated for the longest time, even ran them boosted. I just recently ran into not having enough fuel pump to hold what I have.
Old 03-21-2010, 03:40 PM
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thanks ill prolly put 42# injectors in cause i plan on having a ms4 and some heads
Old 03-21-2010, 04:26 PM
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Originally Posted by jts98z28
this is just out of curiosity, i know at the rate im goin my car has plenty of time before i have to upgrade my fuel system, but when do you have to change your fuel system?
thanks
My 1998 had everything you see in my sig installed at the same time. But one thing I forgot about and my installer just forgot to ask about......a new fuel system.

So when he dynoed tuned it I ran out of fuel pressure at around 5,000 rpm. I did have 42 lb. injectors but the stock fuel system died at 5,000 rpm.

So I immediately ordered a Racetronix system from harness to pump, everything. I think back in 2002 it cost like $275.00. Then I was good to go. GREAT system.

You will be set up with a Racetronix for what you want with a ton of growing room up to around 600+ RWHP.

.
Old 03-21-2010, 06:47 PM
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Originally Posted by LS6427
My 1998 had everything you see in my sig installed at the same time. But one thing I forgot about and my installer just forgot to ask about......a new fuel system.

So when he dynoed tuned it I ran out of fuel pressure at around 5,000 rpm. I did have 42 lb. injectors but the stock fuel system died at 5,000 rpm.

So I immediately ordered a Racetronix system from harness to pump, everything. I think back in 2002 it cost like $275.00. Then I was good to go. GREAT system.

You will be set up with a Racetronix for what you want with a ton of growing room up to around 600+ RWHP.

.
wow thanks, is there any way you could send me a link of what you have?




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