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Upgrading Gtr Injectors And Fuel Pump

rhysc1986

By rhysc1986,
in Engines & Forced Induction

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rhysc1986 Collaborator

rhysc1986

Posted
Posted

looking at upgrading my injecotrs and fuel pump b4 i get a tune and needing advice

in tank vs external which better? walbro vs bosch? looking for something that will fit in relatively easy without paying 3+ times the price to get a nismo one that will drop straight in.

what size injectors needed?

looking for 300awkw max but prob for better fuel ecomony and reliability will go closer to 250awkw.

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

300rwkw you might find will be OK with stock injectors. Some cars are, some aren't so as Jez said - just go with a fuel pump for now mate.

If you need them, get them. Otherwise you can tune to 280/290rwkw and save $700-$900 (purchase/fitting).

What turbos do you have? 300rwkw means non factory so you could probably make more if you did get injectors, you will need AFM's though.

rhysc1986 Collaborator

rhysc1986

Posted
  • Author
Posted

not really keen on spending $600 on nismo pump which is more than 3 times price of bosch or walbro pump just coz its bit easier to install. from sounds of it unless i find a cheap set of injectors stick to what i got coz from what i can see like $600 sard 550cc injectors though the price to go to 1000cc injectors isnt much more.

so for fuel pump in tank vs external which better? walbro vs bosch? looking for something that will fit in relatively easy without paying 3+ times the price to get a nismo one that will drop straight in.

i got the N1 turbos, i tired searching several different topics nothing seems to come up but i get this alot guessing im just not using right words.

Don Dada Mentor

Don Dada

Posted
Posted

I have tuned a gtr 312kw stock injectors but a fuel reg.

250 kw is nothing for stock inj. Just get a fuel pump

What base pressure and afr bro?

But yea 250awkw is poossible with stock 444cc inj, even a little more......I'm doin roughly that now with them at 88% duty with 11.0 afrs,,,,and i'm sure your tuner wouldnt go that rich

Oooh ....an a walbro pump too....not in a gtr tho so i'm not sure about fitment

DVS JEZ Grand Master

DVS JEZ

Posted
Posted

What base pressure and afr bro?

But yea 250awkw is poossible with stock 444cc inj, even a little more......I'm doin roughly that now with them at 88% duty with 11.0 afrs,,,,and i'm sure your tuner wouldnt go that rich

Oooh ....an a walbro pump too....not in a gtr tho so i'm not sure about fitment

I tuned it at 11.5 afr. I never set the base pressure myself so i can answer that one sorry.

Inj hit 105%

sucram Rising Star

sucram

Posted
Posted

There is a new fuel pump, just released not long ago. It flows nearly 350lph at 45psi. 290lph @60psi all at 13.5v.

Basically it flows just over 30% more then a failbro 255, denso etc.@ 13.5v. As another comparison

the walbro and denso need 16.5v to run close to this pump at its 13.5v flow on 0.7 SG.

Nismo quotes 276lph @ 3 Bar pressure, no SG or voltage quoted

The only downside I can see is that it will probably surge on under 1/4 tank on a bnr32- more of a design prob of the

tank then pump.

Its a 100% drop in, in tank pump and the best part is, cost is about $250

I will be getting mine in a few days and post findings

Thelen Rising Star

Thelen

Posted
Posted

What brand? Anyone needing more than 255LPH is going to be aiming for serious power and won't care about a couple hundred $$ saved, and will probably NOT skimp on it given how much was spent on the engine.

But, see how it goes :)

rhysc1986 Collaborator

rhysc1986

Posted
  • Author
Posted

There is a new fuel pump, just released not long ago. It flows nearly 350lph at 45psi. 290lph @60psi all at 13.5v.

Basically it flows just over 30% more then a failbro 255, denso etc.@ 13.5v. As another comparison

the walbro and denso need 16.5v to run close to this pump at its 13.5v flow on 0.7 SG.

Nismo quotes 276lph @ 3 Bar pressure, no SG or voltage quoted

The only downside I can see is that it will probably surge on under 1/4 tank on a bnr32- more of a design prob of the

tank then pump.

Its a 100% drop in, in tank pump and the best part is, cost is about $250

I will be getting mine in a few days and post findings

would like more info on this pump and also you findings

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