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gt2530 on stock rb26

popamono

By popamono,
in Engines & Forced Induction

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7heavn Experienced

7heavn

Posted
Posted

running 2530's here on what believed to be an internally stock rb26 . I'd say on stock fuel system 1.0-1.1bar would be about the limit as injectors would really be maxing out . I'm running bosch 044 , 550cc inj , hks fuel rail , adjustable reg , im at roughly 75% duty cycle at 1.2bar .

pnblight Mentor

pnblight

Posted
Posted

i would think around one bar or so like 7heaven said you will soon know when you put it on the dyno and i would surgest you dont fit new turbos with out a dyno tune to check a/f ratios (as mine had problems at low throddle settings and needed a safc2 )

your next step will give you big gains ,but do it once ,and do it properly

thats if you choice to

as long as you have good turbo back exhaust and descent induction system

700cc injectors

Apexi pfc

rb20/25afm or z32 afms

well with this you can turn it up and the gains will blow you away

1.3bar should give 400rwhp (easily)and still be a reliable everyday driver and not worry the std internals

this is only my opinion cheers

Amaru Veteran

Amaru

Posted
Posted

When I had stock pump and 550cc injectors, the car would only run 1bar before running out of fuel.

Now have GTR pump in tank to 2L surge tank, Bosch 044 from surge tank to rail and Sard 700cc injectors. We have cranked over 1.5 bar through it and its still not coming near the limits of the new pump + injectors.

popamono Enthusiast

popamono

Posted
  • Author
Posted

I'm aware of what there capable of together with an upgraded fuel sys. But im interested to know what power at what boost they can make (safely) on a stock rb26 fuel sys.

When I had stock pump and 550cc injectors, the car would only run 1bar before running out of fuel.

Now have GTR pump in tank to 2L surge tank, Bosch 044 from surge tank to rail and Sard 700cc injectors. We have cranked over 1.5 bar through it and its still not coming near the limits of the new pump + injectors.

pnblight Mentor

pnblight

Posted
Posted
HI guys,

Has anyone upgraded to 2530's on a rb26 (stock fuel system/ecu).

What is the most boost you can run before needing to upgrade fuel system/ecu?

HP?

well i'll think most people wont try to run larger turbos without upgrading ecu or atleast trying to compensate for them ,as you could well run into the problem i had with bad air/fuel ratios ,have the car dynoed after install to check a/f and if your a r32 gtr you might be able to remap the ecu.

best guess

hp=mid 300rwhps(to maybe high 300 if your lucky)

boost=1 to 1.2 bar

will all depend on your a/f ratios and ability to tune them

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