Hey guys so I'm still learning the ins and outs of subby specific parts so bear with me. I have a 14 WRX with stage 3 TP tune with FMIC and cobb TBE. I got an offer for a cheap VF30 but don't know anything about them. Eventually I want a 20G or slightly bigger but would I see any gains with the VF30 or is it actually smaller? I know on a 2.0 it will make ~300-320 but don't know what I'd get on my 2.5. What you guys think?

 

There are really good threads about this on NASIOC.
Subaru Turbo List - NASIOC

From what I understand, the only thing that's different is the bearing from turbo to turbo. Numbers will be very very similar for any oem vf

 

I don't think it'll be worth the time and money to install it. You probably won't feel a difference and it might be a pain to install since the turbo doesn't have the same compressor housing design. I would just save the money for the 20G. Just my 0.02.

 

Cool thanks guys

 

Here's a few links that will help with choosing a turbo and explain the difference between the IHI turbo's. The second one will contain a wide variety of turbo's other than IHI.

IHI Turbos - Specs and FAQ - Perth-WRX.com

Subaru Turbo List - NASIOC

 

It will make no difference. You have a VF52 which is basically the same turbo (P18 turbine) with a rotated (RHF55) compressor housing to fit the smaller intercooler. Its CHRA most likely has the same journal bearing.