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hey so my kits all installed and running but iv gotta install the fmu, its the newer all silver one from SF....there is the main unit plus a relay.
the relay has a 12V, ignition switch, ground and positive fuel pump wires. im not sure how everything works for the fuel pump wire...anyone whos installed this setup please help me out.

 
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I think the relay is exactly the same as the old one. the only difference with the new system is the actual fmu and the way you're able to tune the fuel pressure with it...

http://www.7thgencivic.com/forums/sh...d.php?t=154968

 
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Dont bother with the fmu i would upgrade to a more reliable fuel system

 
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reliability isn't the issue here... how many people out of the people that got SF turbo kit's had to replace their pumps or fmu because of malfunction... less than the number of fingers i can count on one hand...

the topic is about how to install the new version of the sf fuel system. not whether or not it's the greatest fuel system out there...

 
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so i dont need to use the + fuel pump wire??.....cuz the DIY shows how to hook up all the wires except the + fuel pump.......

 
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You don't need the relay. I actually had 1 relay take a **** on me. Just run power to the pump from a 12v ignition power and then a ground. I highly recommend installing a pressure switch in the charge pipe to turn on the pump when it senses boost or go the cheap and easy route by installing a toggle switch in the car to turn on the pump manually when you hit boost. This way is a pain in the ***, but works.

Why should you do this you ask???? When at idle or non-boost, the pump will not be pumping fuel which in turn the pump will get hot and burn up. I have burned up 3 pumps already at $100 a piece. Since I installed a toggle switch, i have not burned up 1 pump in over 1 year.

Also, fuse the power wire.

 
Rep Power: 285

i know why the pumps burn up. Since they are always running, they recycle the fuel through them over and over. As the fuel goes through, it heats up. Causing the pump to heat up. Then the pump literally "burns up".

Install a pressure switch to keep this from happening.

 
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what pressure switch?...i have no idea what you guys are talking about, i know i can install a switch on the 12v and turn the pump on and off....but thats what the vacuum line is for, it only ups the fuel pressure when it sees boost in the vacuum line.

 
Rep Power: 285

go buy a hobbs switch (pressure activated switch) that turns on at ~ 1 psi of boost. Then hook it up between the 12v+ and the pump.

I think i still have the CAD designs for that fuel system on my old laptop. lol. I know i still have the original prototype sitting in my toolbox.

 
Rep Power: 607

Yes, u are correct that the pump will only up the fuel pressure when in boost, but as long as the key is turned on, the pump will run. This will cause the pump to burn up because it is not pumping fuel through it. You can install low pressure switch in the pipe to turn the pump on when it senses 1 psi of boost or install a toggle switch to turn it on manually like i did.

 
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I am not 100% sure, but I think that the lowest setting for the hobbs switch is 5psi.

 
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ya but wont i need to have the switch hooked up to the vacuum line or something cuz its not gonna sense any boost from 12v+...also do i need to hook up the vacuum line?

 
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ya im gonna do the manual switch today because i have one and its simple...
the only thing left that i need to know is which is the fuel feed and which is return...i see 2 lines from the firewall...one is bigger and a more solid line and the other is small and flexible.

 
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No, the pressure sensor gets installed in the charge pipe. You will have to drill and tap the pipe and screw in the sensor. The FMU connects to a vaccum source, but not the actual pump itself.

 
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well i have a part comming off the charge pipe that has electric connectors im guessing for a pressure switch.
but i dont mind just not using the relay and putting a switch, i dont even hit boost daily, so it wont be such a problem.

 
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That is prolly for the alcohol injection.......is it black ?

Is there a brass nozzle with a aluminum elbow next to it in the pipe ???

 
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good info about the switch. the last sf turbo civic i was in the guy flipped it before going to boost and it started making all these weird noises

 
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ya theres the aluminum elbow next to it...

 
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Ok, that is the sprayer nozzle for your alcohol injection kit. If you need help with that, i can instruct you.

 
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i dont have the alchohol injection.
anyways i figured out the fmu i think but i have a much bigger issue now, im leaking oil and im sure its from the weld on the oil return. the oil pan warped from the heat and i guess the gasket isnt doing as much as i thought it would.

 
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hondabond or rtv should fix it.

 
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you can adjust a hobbs switch down lower. You can actually pull the spring out, but then you have to make sure the switch is mounted vertically. I would not recommend doing it that way.

 
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If you have a round black piece screwed in the charge pipe with a aluminum elbow 2 inches away from it, then yes, you have the alcohol injection kit.

 
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i have those parts on the pipe but i dnt have any other parts for the alcohol injection.

 
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if you have the SF kit, you're supposed to use the washer fluid tank to store the alcohol and tap the pressure switch to the stock washer fluid motor.... there also should be an elbow with a nozzle and check valve tapped and screwed into the charge pipe which is connected to washer fluid tank and pump...

 
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ya but i didnt buy it from sf and im not using the alcohol injection.

 
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well, you got it. That is the whole alcohol injection kit. All $150 of it (which actually costs about $12 to buy and make)

 
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haha, bastard Stafford..........i still don't know how he didn't make money.

 
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he did make money.

But he spent it all. Putting 7 kids through private bible school isnt cheap.

Oh yea.. hahah. on that subject, he had a CRX at IDRC this week. Couldnt even get it to qualify. it kept breaking. oh the joy. im loving every second of it.

And my buddy finished 3rd at IDRC in the true street class in his APS twin turbocharged 350z. Go Thomas!!

 
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can someone tell me where to get a pressure switch. i checked at my local autoparts store and all they had was an oil pressure sensor for the oil light