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installed my B&M fuel psi gauge today

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Old Mar 11, 2003 | 07:38 AM
  #1  
JeremyL's Avatar
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Default installed my B&M fuel psi gauge today

went it real easy and everything fit great, i even used teflon tape to make sure there'd be no leaks this time the pressure holds at a steady 32psi and jumps to around 36-40 if i crank on the throttle cable...is this normal fuel pressure?

i have a header, intake and exhaust and when my aem fpr comes in what would be a good fuel pressure to set it at?
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Old Mar 11, 2003 | 07:45 AM
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Default Re: installed my B&M fuel psi gauge today (JeremyL)

Leave it stock right now, until you get a AFC or other piggyback/replacement ECU.

Changes are with I/H/E you are already running rich, so there is no need to up the fuel pressure. When you dyno tune, you will up the FP and then lean it out where necissary with the ECU piggyback/replacement.
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Old Mar 11, 2003 | 08:14 AM
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Default Re: installed my B&M fuel psi gauge today (StyleTEG)

so would there be any need/benefit to and adj fpr as i stand now
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Old Mar 11, 2003 | 08:35 AM
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Default Re: installed my B&M fuel psi gauge today (JeremyL)

Yes, you can always benifit from tuning. But you will need more than just a FPR.

You should also get cam gears, and a S-AFC, and dyno time. The gains won't be as big as if you had aftermarket cams, but you can squeeze more HP out of your current engine package with tunning.

Before you spend the money for all that, I would complete your exhaust system with a high flow cat.
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Old Mar 11, 2003 | 08:47 AM
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Default Re: installed my B&M fuel psi gauge today (StyleTEG)

I would turn up the fuel pressure just a couple lbs. Adding I/H/E puts in more air. more air + same fuel = lean.
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Old Mar 11, 2003 | 08:50 AM
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Default Re: installed my B&M fuel psi gauge today (bryan305)

Honda's run rich from the factory, so there is really no need to bump up your fuel pressure of of now.

HTH.
Adam
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Old Mar 11, 2003 | 09:36 AM
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Default Re: installed my B&M fuel psi gauge today (bryan305)

I would turn up the fuel pressure just a couple lbs. Adding I/H/E puts in more air. more air + same fuel = lean.
Don't forget the ECU compinsates for more air. Otherwise you would have some serious lean conditions durring the winter when the air outside is cold and dense.
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Old Mar 11, 2003 | 01:23 PM
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Default Re: installed my B&M fuel psi gauge today (StyleTEG)

Don't forget the ECU compinsates for more air.
True..but it's not always enough, right? Would the only ways to correctly tune the fuel pressure be on a dyno or with an a/f gauge?
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Old Mar 11, 2003 | 01:33 PM
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Default Re: installed my B&M fuel psi gauge today (JeremyL)

When I installed my gauge, I was reading 40 psi. So when I installed my FPR, I kept it at 30 psi
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Old Mar 11, 2003 | 01:54 PM
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Default Re: installed my B&M fuel psi gauge today (bryan305)

True..but it's not always enough, right? Would the only ways to correctly tune the fuel pressure be on a dyno or with an a/f gauge?
Not always enough for peak performance, definetly..

but with I/H/C/E its going to compinsate for more are and add more fuel, so if anything you are going to run rich and need to lean it out on a dyno instead of the other way around.

I wouldn't try and tune my car with just an A/F guage. Its a good way to make sure you don't somehow go really lean, and know when to stop driving your car, but you really need a dyno + wideband o2 with an a/f printout to tune properly.
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Old Mar 11, 2003 | 02:00 PM
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Default Re: installed my B&M fuel psi gauge today (StyleTEG)

if running a 55shot of N02 would it be recommened to bump up the FP a few pounds??
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Old Mar 11, 2003 | 02:38 PM
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Default Re: installed my B&M fuel psi gauge today (JeremyL)

What's the fuel pressure with the vacuum line from the FPR removed and pinched?
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Old Mar 11, 2003 | 04:53 PM
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Default Re: installed my B&M fuel psi gauge today (IN VTEC)

do yourself a favor and keep an eye out for leaks with that gauge.
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Old Mar 11, 2003 | 05:42 PM
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Default Re: installed my B&M fuel psi gauge today (IN VTEC)

What's the fuel pressure with the vacuum line from the FPR removed and pinched?
I think mine is around 60 psi... but im not sure... ill have to check
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Old Mar 12, 2003 | 03:54 AM
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Default Re: installed my B&M fuel psi gauge today (fsarfino)

thats why i used teflon tape and tightened it down very tight, ive actually noticed an improvement over what i had before cuz i noticed that when i took my banjo bolt off i forgot to put the little crush washer in so i was leaking a bit, no leaks so far with the gauge on and it looks cool when i pop the hood at the gas station to check the oil
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