A crew member working in the engine bay of the Shakewell Racing Subaru WRX STI at the Snowy River Sprint
Not the turbo itself — this is the engine bay it lives in, mid-service at the Snowy River Sprint.
IHI

IHI VF38 turbocharger

On our cars
Type
Twin-scroll
Factory fitment
JDM Legacy GT, EJ20X engine
Turbine and shaft
Titanium
Fits
GD
Surface
Gravel / rally, Tarmac / track
All 6 specifications ↓

Want this, or something like it?

We can’t take an order yet — supply is still being arranged. Ask, and we will tell you what we know about it and let you know when it is available. What people ask for is what we range first.

  • Fitment is confirmed, not guessed

    A chassis is listed only where the part is on one of our cars or on the manufacturer’s own application list.

  • Some of this is on our cars

    Parts marked On our cars are ones we race. Those descriptions are written from running them, not from a brochure.

  • A person answers

    Enquiries go to Michael, who races the cars. Tell us the car and what you are trying to fix.

Not a shop yet — no prices and no checkout. How this catalogue works

About this part

The twin-scroll turbo on our EJ207, run at 19 psi on E85 for 220 kW at the wheels.

The VF38 is IHI's twin-scroll turbo from the JDM Legacy GT's EJ20X, with a compressor housing smaller than the VF36 and VF37 — so it spools early and gives away top end — and it is on Betsy's EJ207 running 19 psi on E85. We have left it standard deliberately. On a tarmac stage the thing that wins time is how quickly the engine answers a part-throttle input out of a slow corner, and a bigger turbo trades exactly that away for a peak number you use for a few seconds a stage. With the stock motor, stock heads on upgraded springs and retainers, and E85, this combination makes 220 kW at the wheels and has been reliable — which on a car that has eaten two turbos in a season is the specification that matters.

Specifications

Type
Twin-scroll
Factory fitment
JDM Legacy GT, EJ20X engine
Turbine and shaft
Titanium
Boost as run
19 psi
Fuel
E85
Output as run
220 kW at the wheels

On our cars

This is fitted right now. The description above is written from running it.

Fitment

Subaru EJ20/EJ25 twin-scroll exhaust manifolds. Confirmed for the chassis below — we list one only where the part is on one of our cars or on the manufacturer’s application list.