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Hi all,

I am currently making 390awkw @ 20psi & looking at cracking over 400awkw.

I need to address 2 areas:

1. Fuel delivery – now running an under car surge tank which i want to remove & run a big intank pump (to simplify the setup)

2. Injectors – now running sard 700cc

Ive been recommended the nismo intank fuel pump as it bolts straight in & delivers 255ltrs/hr, however, i cannot find accurate figures on the performance of the bosch 044 fuel pump (some say 200ltrs/hr, other sources say 300ltrs/hr). I do know that the 044 is good for 700bhp though.

My question is if anyone knows what the 044 flows & if it out performs the nismo pump?

Is there a higher flowing intank pump than the nismo pump?

If i cant get away with my 700cc injectors, i may also need to run the injector dynamics ID1000’s

I think your going to struggle to push that much power through a single pump without going to one of the really big aeromotive units or something similar marko.

what's the reasoning for not wanting a surge tank if it is under the car ?

  • Like 1

Are u staying with 98 ?

What injector duty are u at now?

Some more boost and u should crack 400?

yes

i need to confirm with my tuner as i only just bought the car, i think over 80% (past its efficiency point) as the exhaust temp light flickers under load which is a warning light for the vipec v44 ecu & more than likely injector duty

yeah so if i go to 23-24psi & as long as its safe will make over 400awkw comfortably

Edited by Marko R1

I think your going to struggle to push that much power through a single pump without going to one of the really big aeromotive units or something similar marko.

what's the reasoning for not wanting a surge tank if it is under the car ?

the aust delivered gtr has an oil cooler fitted to the gearbox for the driveline so i want to put this back in the car :)

this was removed for the surge tank

Anything is possible. If ur good at fab work and making a custom fuel pump lid so u can run the 2 lines out.

Get ur tuner to check why the cat light flickers before u assume its injector duty. Just to make sure its nothing else.

yes i'll have my tuner check the light warning to confirm its injectors.

general rule of thumb i think is once u exceed 90% injector duty cycle, it can get dangerous - always good to have a buffer zone

you have my attention :)

where are they based, vic?

This be the thread you are looking for.

Looks like its R33/34 only though :( - maybe speak to them about an R32 version. I would think supplying your own pumps should bring that price down significantly.

I think I saw powertune have a dual 044 in-tank kit with all the bits you need.

yeah I have seen them too in a magazine

website confirms this: www.powertune.com.au

They have a kit for 33/34GTR

they are working on the 32 GTR one

You never know it might be done already. Maybe give them a call

I remeber you had a silver ADM years ago, is this the same car? What setup do you have now?

u have a good memory...yes that is me & yes that is the same car, i hadn't seen it for 5.5yrs!

setup is mechanically still the same (i.e. hks gtrs turbo's, pon cams etc) but now running a vipec v44 (much better than the power fc).

you wont get more than 430HP or so outta an 040 so dont bother, you could look into a Bosch 023? Big brother of the 040..

If you can get twin 044's in tank thats prob your cheapest option if you fab something up yourself however you would want to be really careful that they both were sucking fuel from the bottom of the tank.

I personally have an 040 as a lift pump a surge tank and 2 x 044's feeding to the front of the car with -8AN Braid.

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