stock fuel rail good for boost??

[T04ECB7]

as the title says, is the stock fuel rail good for a boosted motor as long as i use an aftermarket fpr??

[d112crzy]

You don't even NEED an adjustable fuel pressure regulator.

You should worry about your fuel pump and wiring it correctly(stock wiring is shitty) and your fuel injectors being big enough first.

[10thcb7]

is there a diy for better wiring of the stock pump?

[d112crzy]

Do you honestly need one?

Just run thicker gauge wire. Run it directly to the battery, with a relay/fuse in-line.

[westsideaccord]

Then wouldnt it always be on? Or is there an auxilery wire for turn on? This is why 10th, asked for a diagram, Because not everyone is that familiar with wiring nor the fuel pump. Ive never had to rewire one myself, but I do agree 18-20 gauge is not good for something so importent/draws so much amperage. I would highly recommend you use a walbro in fashion of a 255lph fuel pump, so you wont have to upgrade in the future, and at minumum 450cc injectors, depending on psi of boost etc.

[d112crzy]

Do you know how a relay works?
The following relay is a standard bosch relay.


Where is says "stock 12+ wire", use the wire that originally went to the fuel pump, or use any KOEO pin from the ecu.

[10thcb7]

is 86 to be wired to something like a cig lighter ?

[The G-Man]

is 86 to be wired to something like a cig lighter ?

No, wired to nothing. Or not used.

[10thcb7]

87a is not used. 86 appears to use a 12+ from the car not the battery.

[GhostAccord]

^^^ 86 is connected to a 12v ignition source. IE cig lighter.

[T04ECB7]

You don't even NEED an adjustable fuel pressure regulator.

You should worry about your fuel pump and wiring it correctly(stock wiring is shitty) and your fuel injectors being big enough first.

i am going to use dsm injectors. i am thinking about using a walbro 255 lph pump also. i thought about using the adjustable fpr for tuning reasons.

[10thcb7]

RL acuras have bigger pumps too.

[d112crzy]

i am going to use dsm injectors. i am thinking about using a walbro 255 lph pump also. i thought about using the adjustable fpr for tuning reasons.

What are you going to use for fuel management? If you're going to use a chipped ecu or a full standalone, you don't need an adjustable fpr.

[wed3k]

my question is...will the stock setup be good for a 150 wet shot?

of course forged internals, msd ignition and a chipped ecu (and some tuneage) i still want to pass smog.

[T04ECB7]

What are you going to use for fuel management? If you're going to use a chipped ecu or a full standalone, you don't need an adjustable fpr.

i am using an APEXI S-AFC with a wideband.