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With so many threads about turbo upgrades for RB25's i thought itd be a good idea to start a thread that shows results only, as the results from various threads are scattered everywhere. Everyone has there own ideas about what power they want so obviously there isnt ONE perfect turbo upgrade for everyone.

Please post your RB25 dyno graphs only and state the following:

-Engine management

-Boost ran

-Fuel used (pump or special)

-significant engine mods (eg cams)

The idea of this thread is to be a quick reference to various turbo's performances on RB25's, not to be a discussion thread.

Thanks

(If this has been done already let me know, but didnt come up one in search.)

Check (if you live in usa): Costco Weekly Ad, or Supercheap Auto Catalogue.

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:werd:

And does someone have a rb25det hi flow dyno result that they would also like to elaborate a little bit more on.

I dug this up from an old thread heres the thread with talk on the hks2535,2540 & 3037.

Click me

And here is the hks test chart for 2510,2530 on rb20det and the rest 2535,2540 on a R33 rb25det.Very interesting and has helped me to answer some of my quetions.All tests are done at 1 bar of boost.

Click me

There is a larger range than that there too with tests done on other cars as well.

here is my dyno results

mods

3" exhaust

pod filter

10psi boost

safcII

FMIC

BP Ultimate 98

stock standard turbo

We had an idling issue last week and to fix it the boys had to mess with the safc,

after getting the car to idle she ran 285hp but i didnt get a printout so i guess for this exercise i have 273hp

221RWKW mongrel unknown spec turbo from Rigoli.

The build consisted of:

Arias Forged Pistons 1.0 mm OS (1300)

GTR rods with fresh bolts (400)

ACL heat treated race bearings (120)

Balance, clean and O ring block etc. including straighten of crank and lightening. (1100)

GTR fuel pump (180)

Malpassi Rising Rate fuel reg (120)

Standard head gasket (90)

Hybrid Monster FMIC (700) piping (120) new Mig welder (700)

Autohouse Tsukasaki PFC (secret)

Dump and front combo 3" with Fujitsubo "Jasma" 3" stainless system and racing cat also fitted.

Click Here for dyno sheet

  • Like 1

Engine management - PFC

Boost ran - 1.4 Bar

Turbo - Garrett GT30

500cc injectors

Bosch 044 pump

HKS EVC 3

45mm Turbosmart External Wastegate

Custom Made Steam Pipe High Mount Turbo Manifold

Z32 80mm Air Flow Meter

HKS 600x300x76 Tube And Fine Intercooler

Custom 3inch Exhaust

HKS adjustable exhaust cam gearstock

etc etc etc

Fuel used - BP Ultimate

Stock Internals

The dyno graph i have is from MAS 04 as i cant find the selectamaz one where it went 324rwkw on a nice cool exterior located dyno.

  • Like 1

not home atm so cant post up dyno

1995 gts-t r33

turbo back zorst with hi flow cat

pod+ cai

hybrid fmic

10psi

stock turbo

stock ecu

optimax fuel

hybrid bov

173rwkw on a 29 degree temperature at 7:30pm lol about 6 months ago was last dyno

new results in a week with power fc, avcr (12psi), z32afm

ben...

1994 GTS25t

Hybrid TO3/TO4E (high flowed too - back cut ex wheel etc)

CP Forged pistons (8:1 CR)

Grex 1.6mm HG

ARP rod bolts

Port matched manifold

550cc inj and custom top feed rail

Malpassi reg

044 pump

K&N and custom inlet piping (nil AFM)

LT12 Microtech

FMIC

HKS EBC

Full 3" exhaust

The list could go on a LOT longer!

Also now have HKS cams (256 / 264)

Dyno pre HKS cams

Boost - Drops away to make peak power of 299.1rwkw @ 1.3bar

Dyno post HKS cams

Boost - Drops away even worse now! 270rwkw @ 1.1bar

Wanted - more $$$ to get a bigger turbo, run 1.5bar and make 300++rwkw :)

1995 gts-t

Stock turbo

pfc

gtr fuel pump

adj fuel press reg

3'' catback exhaust

ebc

Pod filter+partion

Small Hks front mount

Slipping stock clutch,leak in header/exhaust gasket.Cant remember what boost it ran...

12:1 afr's

182.0rwkw

:chop:

R33 gtst

Series 1

Stock turbo

Custom Dump pipe (Seperate wastegate pipe blended in), Hi flow cat manderal 3''

Stock ecu

Blitz LM cooler

8psi boost

K&N panel

Shootout mode dyno dynamics 175RWKW

Leaning out so couldn't rev out

AFR's went to 13.1 so backed off at 4900rpm

Will dyno in jan with pfc, pfc boost controller, upgraded fuel pump/nismo press reg.

This thread is great!

gcg st.1 450hp high flow turbo . gtr front mount cooler

aftermarket manifold, ces racing 3inch split dump, 3inch cat and exhaust.

link ecu, malpassi rising rate reg.

stock internals and stock cams.

224rwkws at 17.5psi, with more power to come just need new coil before i can run more boost. 224rwkws at 1.2bar shootout mode, dont have scanner to post sheet.

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