hello all.. any body know what is the turbo in the MY06 STI?

thank you.

 

i asked this a while back i think the answer is the VF35, same as the previous models.

 

Why when USDM STI uses VF39?

 

no idea......it could be, nobody seemed to know, i do know the WRX still has the measley TD04....

 

Twin scroll turbo is VF37.

Did a GC8 conversion with one a while back.

Andy

 

the UK spec STI still isnt twin scroll though is it?

 

Re-volt never said whether it was Uk or not.


Andy

 

andy.. yes i didnt mention it sorry. i live in the middle east. i guess we share the same cars with europe i am not sure. i checked subaru.com.au and saw a pdf file under the download section says the turbocharger type is RHF55 manufactured by IHI but i never heared of such model.

the car is very smooth and spools pretty fast. very different from my previous STI7 but the older one pulls really harder on the mid to high range of rpm.

 

good point well made

 

If it is a 2.0L JDM STI then it is a VF37.

If it is a 2.5L STI then it is a VF39.

 

I thought the same until a Subaru mechanic told me the European STI 2.5lt version haven't the same turbo as the USDM STI.
Fingers crossed!

 

VF43

 

So what is the difference from the VF39 - smaller (since International makes less power than USDM)?

 

Never understood this USDM thing, the US is an EXPORT market for a Japanese manufacturer so surely it should be USEM.

In any case the US STi is 300 hp measured in a different way to how it's done in Europe or Japan. An EU 2.5 STi would probably also be rated at 300hp if measured the same way.

Mike

 

The European version can easily achieve much more power, think of the PPP that includes regarding exhaust only a free flow back box and hits 320ps!
What if it had full exhaust with proper map etc?
On the other hand the S204 that is 2.0lt with VVT on both intake-exhaust valves (AVCS) with the VF42 has about 320ps and more torque than our STI in standard form!!!

 

Jim

Achieving the power is the easy bit.......

Mike

 

To my understanding the 06 STi EDM/JDM comes with the VF43 ... does anyone know or have the boost map of this turbo or know where i can find it?

 

JDM's come with a VF36/37 depending on model, the S204 has a VF42 though.

Tony

 

weird! a buddy of mine is the owner of a scooby dealer ... he drives a 2006 STi ... he even ordered a VF43 turbo because there was a time that he thought that the turbo in his car was bad.... turbo of his car is oem the VF43

But i am looking for the boost map of this turbo

 

does anyone know what the limitations of the VF43 are with regards to max boost, potential, spool up times etc?

 

What i have read is the VF43 a VF39 with a 0.1 inch bigger wastegate.

 

Interest to me...

https://www.scoobynet.com/general-te...2006-07-a.html

 

Great thread - about 200 hundered different opinions on which turbo the 2006 Sti has