How Good Is The Standard Rb25det Fuel Reg?

[ryan101]

every1 is telling me to use the standard reg, how good is it? better then a adjustable one? I will list all my mods and can sum1 tell me if im wasting my time with a adjustble one?

i have a rb25det series 2 engine, trans and standard s2 comp.

turbo bak 3inch (i think) hi flow cat

front mount

bigger fuel pump ( don't no wat size)

fuel reg?

and duel stage boost controler stock psi on low and hi is 11psi

I got a price for a new fuel reg from nissan it was bout $230 new

[lachlanw]

do a search.

and leave it alone unless you already have over 300 kw

[Lukas 33]

every1 is telling me to use the standard reg, how good is it? better then a adjustable one? I will list all my mods and can sum1 tell me if im wasting my time with a adjustble one?

i have a rb25det series 2 engine, trans and standard s2 comp.

turbo bak 3inch (i think) hi flow cat

front mount

bigger fuel pump ( don't no wat size)

fuel reg?

and duel stage boost controler stock psi on low and hi is 11psi

I got a price for a new fuel reg from nissan it was bout $230 new

Absolute waste of time getting a FPR for those mods. I dont know whether I would say "better" than an adjustable one. But it will do the job fine. You wont be maxing out your injectors on 11psi with those mods. And just for your benefit "You are wasting your time with an adjustable FPR"

Save that $200 or whatever it is and put it towards saving for an ecu

[R31Nismoid]

I've already told you, twice infact

The factory one is fine for just about every application sub 450rwkw.

If you purchase the correct injector size for the application, the factory Fuel Reg is good for over 400rwkw.

I've made 370rwkw - and i can think of another 20-30 odd people who've made more than that with the factory fuel reg.

So honestly - not sure what you are trying to achieve here.

The factory fuel reg is TOTALLY fine.

[Mr. Untouchable]

my stock fuel reg has proved reliable up to 350rwkw. And people have pushed them well past that.

dont get a new one, pick one up second hand. (FS thread, ebay or wrecker etc)

I wouldnt bother with a upgarde Reg unless 400Kw + and or e85 is on the cards

[ryan101]

im sorry, but i am new to turbo cars neva had 1 b4

how will is know if i get a good or bad second hand reg?

[ryan101]

and how will i no i getting the right 1? has sum1 got a pic i can see of a rb25det reg?

[The Mafia]

your car already has a factory fuel regulator fitted.

Why do you persist in getting another?

And it might help if your posts are more coherent. This is a message forum, not a sms chat.

[Swiper the Fox]

I've already told you, twice infact

So honestly - not sure what you are trying to achieve here.

The factory fuel reg is TOTALLY fine.

listen to this mans fingers...they are very smart and they type the truth.

his brain however is totally mad and should not be taken seriously.

[R31Nismoid]

I never said to take my brain seriously you bastard guy

[joeyjoejoejuniorshabadoo]

is your stock one broken?

there is NO benefit getting one untill massive power figures are on the cards... and especially with the stock turbo!

the turbo cant even flow enough to need more fuel ffs

[robots]

Doesn't sometime stock fpr plays up after aftermarket fuel pump install and doesn't hold the pressure ? I often see raised pressure after fuel pump install. Like 3bar instead of factory 2.5bar at idle.

[JonnoHR31]

it all depends on the condition of the stocker one. if its working fine then keep using. personally, i killed 3 standard regs in under 5000km's and gave up on them, aftermarket was cheaper than a new genuine so i bought a tomei reg. true story

[ryan101]

the car never came with the stock 1!

i have adjusted my fuel reg to 43psi with the vac line disconnected!!

[The Mafia]

the car never came with the stock 1!

i have adjusted my fuel reg to 43psi with the vac line disconnected!!

ok you have two problems here.

1. You never told us you had an aftermarket one installed already.

2. You should NEVER disconnect the vac line from a FPR.

[Chrispy]

ok you have two problems here.

1. You never told us you had an aftermarket one installed already.

2. You should NEVER disconnect the vac line from a FPR.

What?

Should set adjustable regs with the vac line disconnected so you can get the fuel pressure at 0psi manifold pressure correct. If you set it with the vac line connected you will end up with fuel pressure too high at 0Psi manifold pressure, it'll be like 55psi or so.

[R31Nismoid]

ok you have two problems here.

1. You never told us you had an aftermarket one installed already.

2. You should NEVER disconnect the vac line from a FPR.

He told us in his other thread about ... pretty much the same thing

[ryan101]

i was told,, You set the pressure with the vacuum line removed to 3 bar or 43psi. When you reattach the vacuum line, it should dip down so that its 3 bar minus manifold vacuum. Mine sits around 2.65bar at 500mmHG with an aeromotive FPR and an RB26 @ 950rpm idle.

that was from WINSTONUSMC

so thats wat i have done?? and with the vac line connected it sits at bout 26-27 psi

and with it off its abit over 43psi

[ryan101]

and JONNOHR31 said, 25-30kpa is around 4-5psi, i doubt the car would even run with that little pressure. as said 3 bar or 43psi is what it should be. if the stocker works put it back in, only reason to go aftermarket is if you break standard ones, as well

[Hiney]

if i have an adjustable FPR, but stock injectors... can i run more boost by raising the pressure in the fuel rail?

only asking as i got the FPR rediculously cheap, but can't afford new injectors atm