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stupid question.. maby... ( are there any epa problems with highflowing a stock turbo in standard housings? )

Technically you its not allowed but epa cant tell that you have hi flowed the inernals so its fine to pass a test with a hi flow.

Little update:

This is a cheap sleeve bearing rebuild option ($950 inc GST) for people with totally blown (need new core) GT3582 turbos.

turbinehousing.jpg.JPG

front1.jpg.JPG

back.jpg.JPG

what sort of power are you chasing for?

the G1 runs of a 71mm 52T comp and G2 runs off a 76mm 52T comp. For RB20 they are ok to run in .63 turbine housings.

what sort of power are you chasing for?

the G1 runs of a 71mm 52T comp and G2 runs off a 76mm 52T comp. For RB20 they are ok to run in .63 turbine housings.

Looking for about 220-230kw with minimal lag

  • 2 weeks later...

Stao, i am really starting to think my turbo is causing all of my lag problems.

I have replaced all my rubber joiners, new intercooler, replaced other engine bay hoses, disconnected boost gauge and boost controller and the car is still a laggy peice of crap.

3psi by 3000rpm 10psi by around 4800rpm all done in 4th gear. I replace one last hose today and noticed the turbo side of the car is alot louder that the front or other side.

Car never had lag issue with stock turbo (Yes i know its a bigger turbo and will have more lag but not this much)

Just had a big day tuning at status. This is the first run with my new forged engine. Every thing on this engine apart from pistons are stock standard, so any good healthy RB25det will be able to do the same.

Just recap of modifications list:

800cc injectors

Nistune ECU

Z32 AFM

600x300x75mm FMIC

3inch turbo back exhaust

3inch intake pipe with pod.

CP pistons

ATR43G3 / Pu high flow .82

Stock engine head

Stock cams

Stock cam gears

Stock exhaust manifold

Stock inlet manifold

Stock fuel rail

Stock engine block, Con rod & Crank.

This is a controlled run based on BP 98 Fuel, No boost controller, No wastegate controller.

Car made peek of 303rwkws at 20psi with drop to 17psi (can be fixed with Gate controller). The constant was between 295 to 300rwkws.

atr43g3303rwkw.jpg

atr43g3303rwkwboost.jpg

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