[FAQ] How-To: B&M Fuel Pressure Modifier install (56K, will take all day) - Honda-Tech - Honda Forum Discussion


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[FAQ] How-To: B&M Fuel Pressure Modifier install (56K, will take all day)

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Old 04-30-2005, 03:40 AM   #1
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Default [FAQ] How-To: B&M Fuel Pressure Modifier install (56K, will take all day)

Ok guys, I just want to start this thread by saying if you plan to do this mod only to turn the fuel pressure up to the maximum possible setting, you are a ricer and you can leave my thread right now. However, if you are an adept self-tuner or are having your car professionally tuned, this is an ideal modification. It requires little time and skill, and doesn't cost very much. Happy modding! </FONT>

NOTE: You must have a fuel pressure gauge installed, or a fuel pressure tester that plugs in on top of the fuel filter. My car has a gauge installed on top of the filter. (I sell these for $18US shipped, PM me for details)

First, we have a picture of what we will be installing.


It's a B&M Command-Flo Fuel Pressure Modifier, Part# 46057 in silver. These are available in a variety of colors, ask your seller.

Open up the package and make sure you have everything.


You should have:
-1 Command-Flo Body
-1 Command-Flo Base
-1 Brass threaded piston
-1 Spring
-1 Red silicone O-ring
-4 6-32 bolts
-1 Jam nut
-1 Vaccum line
-1 Tube of LocktiteŽ
-1 Instruction sheet

You will also require a few tools:


Pictured tools:
-Shop towels
-3/8" drive socket wrench, 6" extension, and 10mm socket
-Pliers
-1/2" box wrench
-New O-ring for the regulator (Honda part#16741-PG7-005 for the D16Y8 anyways...)
-Hacksaw
-And of course, ... not required, but certainly recommended as with any do-it-yourself job.

Tools not pictured
-3/16" wrench (under the rag)
-7/64" Allen key (also under the rag...)
-More beer

Now, you're going to want to get your fuel pressure readings first. With the fuel pressure gauge installed and the engine idling at operating temperature, remove the vacuum hose from the top of the fuel pressure regulator, plug the vacuum hose and read the fuel pressure. Write it down, because this is what you're going to set it to when you're done. (unless you're self tuning)

Now reconnect the vacuum hose to the regulator and take that reading as well.


My readings for my engine/car were:
300kPa and 250kPa respectively. The Helms manual says it should be between 260-310kPa (38-46psi) line disconnected, and between 200-250kPa (28-36psi) with the vacuum line connected to the regulator, so I'm good here.

Now you're ready to take the stock regulator out, so shut the engine off. I'd recommend letting the car sit for a little while to cool off since you're working on the fuel system, but hey... whatever. Relieve the fuel system pressure by whatever means you prefer. If I'm in a rush, I usually remove the gas cap, put a rag around the banjo bolt on top of the fuel filter and loosen the bolt a little. If you have a good fuel pressure tester, it will have a relief button and a relief tube as well.




Ok, fuel pressure relieved. Now find your regulator, looks like this:


Place a shop rag underneath the regulator, as some fuel will drip out.

Now, disconnect the vacuum line from the top, and focus your attention to the back. Before you remove the two 10mm bolts (red arrows), remove the clamp for the return line (yellow arrow) and remove the return line.


Now remove those 10mm bolts.


Once those bolts are out, put them in a safe spot... and the regulator is off.


Now it's time to cut the top of that OEM regulator off.

You should make your cut a little more than half way from the top. Don't get too hung up on precision for this part, because it doesn't really matter. Just make sure there's no sharp edges sticking out. Also note there is a spring inside the regulator, so be careful.

Now it should be apart and look like this.

Discard the spring and the top section of the OEM regulator, unless you like to save stuff like this.

Assemble the Command-Flo body (new top section)

Thread the brass piston all the way down, (not tight though) thread the jam nut on the other side all the way down. (also not tight) Carefully insert the red silicone O-ring that was provided with the new regulator, and place the spring in place on it's seat in the body.

Now, dab some of the provided LocktiteŽ on the threads of the new 6-32 bolts, place the base over the OEM regulator below the lip, and install the Command-Flo body over the top part of the OEM regulator. Make sure the spring stays seated in the OEM regulator and the Command-Flo body. Push them together as far as you can, and tighten all for 6-32 bolts with your 7/64" Allen key. IMPORTANT: Make sure you don't over tighten these bolts. These bolts are very small, and it doesn't require much force to make the body meet with the base. It just needs to be snug. Should look like this when you're done this step:


Now, re-installation is reverse of the removal process basically. Place the new OEM replacement O-ring onto the regulator and position it on the fuel rail to thread the bolts back in.


Attach the provided vacuum line to the intake manifold, measure and cut the hose to the appropriate length.


Reattach the return line to the bottom of the regulator, use a new clamp if necessary. For me, it was necessary because I hate those stupid OEM clamps.


Almost looks like it belongs in there!


Now you're ready to start it up and adjust the pressure. Start the engine, remove the vacuum line from the new regulator, and plug it. Watch your pressure gauge as you adjust. To raise the fuel pressure, turn the shaft clock-wise with your 3/16" wrench. To lower, counter-clockwise obviously.



Right on the money! Now, reinstall the vacuum line and tighten that locknut on the top with your 1/2" wrench. Don't be an animal, don't over-tighten this. Just make it snug because if you break anything, you won't have a drivable car.

Now remove your fuel pressure gauge if it's a non-permanent one. (being sure to relieve the fuel pressure once again of course ) Remember, I sell those gauges as pictured for $18 shipped, <FONT COLOR="red">they are permanent, meaning they stay on top of the fuel filter all the time.</FONT>

Congratulations, you're finished. Total time should be less than an hour... probably took more time to read this!


Modified by CycloneBlue_1.6EL at 2:25 PM 4/30/2005

Last edited by Syndacate; 07-24-2010 at 08:02 PM. Reason: Just helping some cleanup - HTML does not work in this forum - Converted HTML tags to vBulletin Equivalents.
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Old 04-30-2005, 04:27 AM   #2
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Great Write-Up!
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Old 04-30-2005, 06:19 AM   #3
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (CycloneBlue_1.6EL)

that's one long write up
but useful though
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Old 04-30-2005, 06:28 AM   #4
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (CycloneBlue_1.6EL)

Good writeup, that's how it should be done, long, and explains everything



CDN ONT crew represent
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Old 04-30-2005, 06:37 AM   #5
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (CycloneBlue_1.6EL)

Where waas this thread last month
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Old 04-30-2005, 06:55 AM   #6
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (vtec69)

great write up! i did this awhile back and it was a great mod dont know why everyone puts down b&m! but it doesnt take to long and if you can read directions and are somewhat aware of what they mean it pretty much self-explainatory. But great nice up!
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Old 04-30-2005, 07:05 AM   #7
 
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (CycloneBlue_1.6EL)

Very Nice!!!!!!!
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Old 04-30-2005, 07:52 AM   #8
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (HitEm'Up)

Holy **** i never knew you had to cut and use the stock FPR. I thought it was a take off, put on type mod. Good ****

Also your gauge, is it permanent or do you have to remove it when you drive the car?
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Old 04-30-2005, 10:09 AM   #9
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (Luserkid)

Quote:
Originally Posted by Luserkid
Holy **** i never knew you had to cut and use the stock FPR. I thought it was a take off, put on type mod. Good ****

Also your gauge, is it permanent or do you have to remove it when you drive the car?
Guage is permanent. You can see it in this pic:


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Old 04-30-2005, 10:12 AM   #10
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (CycloneBlue_1.6EL)

This is actually a really easy mod if you know how to use a hacksaw. It won't take longer than an hour and is pretty hard to screw up. Just don't overtighten anything and you'll be fine.

I actually got irritated with the hacksaw after about 5 seconds and used the dremel for the rest!
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Old 04-30-2005, 10:15 AM   #11
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (CycloneBlue_1.6EL)

What's with the valve cover? Is that homemade?
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Old 04-30-2005, 10:24 AM   #12
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (Archidictus)

a few cars in japanland had them i thought, but good write-up, if you dont mind me asking how much was the fpr?
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Old 04-30-2005, 10:29 AM   #13
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (Soccerking3000)

Quote:
Originally Posted by Soccerking3000
a few cars in japanland had them i thought, but good write-up, if you dont mind me asking how much was the fpr?
I paid $60 NIB for mine from a friend on here JDMCRX, he had an extra.

Quote:
Originally Posted by Archidictus
What's with the valve cover? Is that homemade?
That's the Acura 1.6EL valve cover my friend.
https://honda-tech.com/zerothread?id=1216425

And if you're not familiar with the 1.6EL, my car:
https://honda-tech.com/zerothread?id=1178023
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Old 04-30-2005, 11:49 AM   #14
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (CycloneBlue_1.6EL)

Quote:
Originally Posted by CycloneBlue_1.6EL
That's the Acura 1.6EL valve cover my friend.
https://honda-tech.com/zerothread?id=1216425

And if you're not familiar with the 1.6EL, my car:
https://honda-tech.com/zerothread?id=1178023
I'm familiar with the 1.6 EL, but I had no idea they had such cool valve covers. Wicked. Nice writeup, by the way .
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Old 04-30-2005, 11:55 AM   #15
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (Archidictus)

the question is will it fit on a d16? ordo they have a d16, i have no idea
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Old 04-30-2005, 12:04 PM   #16
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (Soccerking3000)

Quote:
Originally Posted by Soccerking3000
the question is will it fit on a d16? ordo they have a d16, i have no idea
Looks like it will and yes, they do .
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Old 04-30-2005, 12:08 PM   #17
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (Soccerking3000)

cool
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Old 04-30-2005, 12:10 PM   #18
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (HATCHingMN)

excellente
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Old 04-30-2005, 12:10 PM   #19
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (Soccerking3000)

Quote:
Originally Posted by Soccerking3000
the question is will it fit on a d16? ordo they have a d16, i have no idea
Quote:
Originally Posted by Archidictus

Looks like it will and yes, they do .


D16Y8 POWER! Boost will be installed the weekend after next!
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Old 04-30-2005, 12:21 PM   #20
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (CycloneBlue_1.6EL)

i mihgt havto find one of those valve covers....
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Old 04-30-2005, 01:10 PM   #21
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (Soccerking3000)

Nice write up alex can not wait to see it all running
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Old 04-30-2005, 01:17 PM   #22
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (JDMCRX)

Quote:
Originally Posted by JDMCRX
Nice write up alex can not wait to see it all running
Thanks man, me either

Quote:
Originally Posted by Soccerking3000
i mihgt havto find one of those valve covers....
I've been looking, so far... no luck.
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Old 04-30-2005, 06:01 PM   #23
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (CycloneBlue_1.6EL)

I'm surprised that nobody has flamed me for using two rubber hoses for the crankcase ventilation outlet on the valve cover yet...
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Old 04-30-2005, 07:03 PM   #24
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great write up!
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Old 08-17-2005, 03:22 PM   #25
 
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Default Re: [FAQ] How-To: B&M Fuel Pressure Modifier install (_Cyclone_)

hey thats a pretty clean valve cover did that come stock or after market?
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