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Base fuel pressure and timing questions.

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Old Oct 20, 2005 | 09:56 AM
  #1  
underpressure02's Avatar
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From: Allentown, PA, USA
Default Base fuel pressure and timing questions.

I just picked up a hatch with a gsr swap in it. The bottom end is stock the head has a slight pp, skunk 2 stage 2 cams, sk2 cam gears, springs and retainers running stock gsr injectors with a kenji chipped ecu. Soon I am going to take the car down and get it dyno tuned but for now I wanted to know what do you guys normally run your base fuel pressure at and timing?

The reason I am asking is b/c the car started to run really rich and I saw the nut that locks the set screw in on the aem fpr was missing and I was running 55psi of fuel pressure. I backed it down to 45 but that still sounds high. I am only running 38psi on my turbo civic but have 756 injectors in that car.

Any help would be great.

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Old Oct 20, 2005 | 05:36 PM
  #2  
makelove2hondas's Avatar
 
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From: bean town, ohio, usa
Default Re: Base fuel pressure and timing questions. (underpressure02)

find out if it is running rich with that pressure of fuel and go from there
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Old Oct 20, 2005 | 06:04 PM
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DEMNTD1's Avatar
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Default Re: Base fuel pressure and timing questions. (makelove2hondas)

Stock fuel pressure is about 47 to 48 psi with vacuum off and stock injectors 240cc.

But since you are running a rechipped ecu, it may be dumping more fuel.

I say get on a dyno or get a wideband for proper A/F readings.

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Old Oct 21, 2005 | 05:44 AM
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underpressure02's Avatar
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Default Re: Base fuel pressure and timing questions. (DEMNTD1)

I have a wideband in my turbo civic but it is a pain in the *** to uninstall. I guess I will have to do that.
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