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Old 11-28-2001, 03:48 PM   #1
imprezawd
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Question Will A Fuel Pressure Riser Give any gains??

What sup!

I know MY99 Rs runs pretty rice from the factory, and then modding it out with you average bolt ons will then tend to lean it out a little>> SO Will a Fuel pressure riser give me POWER

Let me know what you think.
I will end up probably buying a Weapon R FPR
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Old 11-28-2001, 04:04 PM   #2
HndaTch627
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no....not on a non pressurized car....you can get an adjustable fuel pressure regualtor and you might see a SLIGHT improvement...but not much.

jeremy
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Old 11-28-2001, 04:22 PM   #3
bsquare
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Or just get a S-AFC since you aren't at the limit of the stock fuel system, so raising the pressure will just make it wear out faster.
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Old 11-28-2001, 04:29 PM   #4
ylexot
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Question

What about when your car is fairly modified? i.e. CAI, headers, exhaust, hi-flow cat, cams (I'm getting there)

I think that setup would be stressing the stock fuel system. Also, would a fuel pressure riser be adequate, or is it a better idea to change the injectors (and anything else?).
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Old 11-28-2001, 04:43 PM   #5
Midwayman
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Default Re: Will A Fuel Pressure Riser Give any gains??

ROFLMAO! Runs rice from the factory! LOL

K... the FPR will help if you're outrunning the fuel supply. Untill then, it wont do you a bit of good. FWIW you're gonna need both a FPR and a safc (or similar) once you get over what you injectors can handle at stock pressure.

Quote:
Originally posted by imprezawd
[BI know MY99 Rs runs pretty rice from the factory[/b]
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Old 11-28-2001, 06:03 PM   #6
imprezawd
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I met Rich
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Old 11-28-2001, 06:09 PM   #7
bsquare
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Me too, he's a great guy that Rich!
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Old 11-28-2001, 07:03 PM   #8
Longshot
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Quote:
Originally posted by bsquare
Me too, he's a great guy that Rich!
ROFL

Umm.. who says the 99's run rice... er rich from the factory? I was under the impression they lean out like mad once you put an intake on?

Korey
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Old 11-28-2001, 08:25 PM   #9
scubaracer
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Default Ha ha ha!

Quote:
Me too, he's a great guy that Rich!
Bsquare, you are funny.

The 98's and 99's will lean out with an intake and exhaust. that is why you will need fuel enrichment. buy an safc and maybe a fuel pump and tune it. then you'll be fine.

FWIW, I have a friend with an integra and he said he noticed very minimal gains with a new fuel regulator.

peace.........
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Old 11-28-2001, 09:12 PM   #10
Captain Ding
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The reason that 98s and 99s run lean is because of the MAF sensor not reading airflow correctly. The fuel system itself is able to pump out all the fuel the engine needs up until around 200hp. Interference in the CAI where the MAF is located causes the MAF to send a signal to the ECU that indicates a lower volume of air than what is actually there. Since fuel is injected based on this signal, not enough fuel is pumped through causing a lean condition. All you really need to get around this is an SAFC.
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