Fuel Pressure Reading
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BOOSTED DOHC i-VTEC
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Fuel Pressure Reading
What is the normal fuel pressure reading on the SF Fuel System?
I got a Autometer Electric Gauge (CF Series). It is reading @ 47psi
Anyone know what is the reading b4 SF fuel system and after???
I got a Autometer Electric Gauge (CF Series). It is reading @ 47psi
Anyone know what is the reading b4 SF fuel system and after???
SRT-4 owner with 2MCHPSI
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Rep Power: 0 when i did the return conversion on my ride, my factory fuel pressure was around 42-45psi...i would think that the sf fuel system would have it raised quite a bit more than that... 
SRT-4 owner with 2MCHPSI
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Originally Posted by CivicMexicano
well if it is a 10:1 FMU the for each psi of boost it would raise 10psi of fuel pressure right???
that sounds right...that would be the reason why his gauge is reading 47psi...cause it isnt under boost...that would be his factory setting, not what the sf fuel system is doing...
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BOOSTED DOHC i-VTEC
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Rep Power: 0 at idle is 47psi and at boost it is still 47psi. my gauage does not move at all.
no matter at boost or idle.
I have been boosting at that level (47psi) for 6months. I had a wire loose 2 days ago and it drop to 40psi, so I was wonder is that a stock pressure.
no matter at boost or idle.
I have been boosting at that level (47psi) for 6months. I had a wire loose 2 days ago and it drop to 40psi, so I was wonder is that a stock pressure.
Stock pressure is 45 lbs. In 2nd gear, smash the gas to the floor. If the pressure doesn't rise 10:1 or whatever with boost your FMU is junk. You will see the needle move on the gauge. If your in boost at say 5lbs, your fuel pressure should be 95 lbs assuming a 10:1 ratio. 45lbs base+50lbs of a 10:1=95lbs. At 5lbs of boost I would not want to run any less than 85 lbs on the stock injectors. AND no more than 95 lbs. The injectors are crying at this point and don't want to play anymore.
Last edited by Titleist71; Apr 26, 2005 at 11:34 PM.
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BOOSTED DOHC i-VTEC
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Originally Posted by Titleist71
Stock pressure is 45 lbs. In 2nd gear, smash the gas to the floor. If the pressure doesn't rise 10:1 or whatever with boost your FMU is junk. You will see the needle move on the gauge. If your in boost at say 5lbs, your fuel pressure should be 95 lbs assuming a 10:1 ratio. 45lbs base+50lbs of a 10:1=95lbs. At 5lbs of boost I would not want to run any less than 85 lbs on the stock injectors. AND no more than 95 lbs. The injectors are crying at this point and don't want to play anymore.
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BOOSTED DOHC i-VTEC
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Originally Posted by Titleist71
Also make sure your fuel lines are hooked up correctly.
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