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I installed a boost gauge to my 04 civic ex and it seems that my fuel is not holding pressure. I would have to crank the car twice to start it up. I installed the vacuum line into the far right on the fuel rail (far right in are standing in front looking at your front bumper). I installed a T splitter right in front of that sensor. For those of you who has a boost gauge, where did you run your vacuum line into?

 
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I am confused. What does fuel pressure have to do with a boost gauge and how did you Tee into the fuel rail.

 
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I thought the same, but now I'm thinking that he has installed the fuel pressure gauge.
You can install fuel pressure gage on your A pillar, it will always read 45 psi, so you wont have to buy a turbo kit, because you are mentaly boosted now.

 
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sorry, didn't explain myself clearly. there is this sensor near the right side of the fuel rail that has the vacuum lines connected to it. Since our cars has no fuel return line, the fuel slowly starts going back to the gas tank. I think whatever vacuum line I Teed into holds some sort of air pressure that tells how much fuel pressure the engine needs. I will try to take a pic when I can.

 
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what? returnless means that the fuel NEVER goes back to the gas tank.

 
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For more input, you need to change thread title to: HELP WITH FUEL PRESSURE GAUGE...

 
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when they say returnless, there is no fuel return line. the fuel does return back through the main lines. when the fuel pressure starts to drop, the fuel starts flowing back from the main lines to the gas tank. so when you haven't started your car for like a week, it takes a lil longer to start your car. think of it as a straw, the liquid in a straw is not going to stay in the straw without any pressure, right? what I am saying is, when I installed the boost gauge to that certain vacuum line, the fuel is not holding its pressure after I turn off the car. When I want to start the car, I have to put the key on the ON position then wait for the fuel pump to put the pressure back in then crank the car to start. My main question for the forum is which vacuum line did you guys hook the boost gauge into?

(This thread is not about a fuel pressure gauge. I do not have a fuel pressure gauge. I just installed a boost gauge and have questions about it.)

 
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i also wanna know. i thought you just pick a vacuum line and T into it. like the ones going to the right tb sensor (EVAP?)

 
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Just the right of my BOV, you can see where i tapped into for the vaccum line for the boost gauge, bov and my fuel system.

The boost gauge has nothing to do with fuel pressure.

What for fuel system are you using ???

Did you install a check valve ???

 
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for the fuel system, I am going to use rsx injectors and emanage. Is your Tee connected to the vacuum line that goes to a sensor that links to your fuel rail?

 
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thats not a sensor. Thats an evap port. And it connects to a solenoid that hooks to a ventillation tube that vents gas vapors into your intake manifold instead of the atmosphere.

Connect to the side that is between the solenoid and the intake manifold. Not between the solenoid and the evap port on the rail.

 
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so is it the hose that is further back in the engine bay?

 
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It is the hose that is right under your throttle cable.

 
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Im having trouble with a boost gauge too. But i went straight into the intake manifold from one of the vacumm lines right on it. It reads the vacuum pressure right now but it makes the rpm's spike. any ideas?

 
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hey all i want to kno is if i install a BOV in my 03 acura 1.7 el, will it sound ****? ive read all this other **** sayn i need a turbo

 
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omg you're retarded. for one, don't necro. for two, search before you open your mouth. do you even know what a blow off valve does? other than making a funny noise? buy one, waste ur money and install it. nothing will happen. or you can buy a bov and throw it in the trunk. it vents pressure between the compressor and throttle when the throttle plate closes. do you have a compressor? no. thought not. now go away.

sorry.

 
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OK! In case you guys didn't know this.... Most cars have rising rate fuel pressure reg's... The way that works is through manifold pressure which allows the fuel pressure to increase as the throttle plate opens more (more manifold pressure) Easy fix is to move your vaccum source that your boost gauge is on (off your line to the FPR)

 
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Kill yourself.....