62mm High-Flow Throttle Body — 2022+ Subaru WRX FA24F
62mm High-Flow Throttle Body — 2022+ Subaru WRX FA24F
This is the throttle body mod for people who care about pressure drop, response, and real airflow—without turning the intake tract into a hack job. We take the OEM 60mm unit and re-bore it to 62mm, then fit a matching 62mm throttle blade so you’re not leaving a “step” and a big obstruction right where the air has to make its last turn into the manifold.
The goal is simple: more usable flow and less restriction at the throttle body—especially where a stock blade/shaft combo becomes a choke point at higher mass flow.
What you get
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Re-bored throttle body: 60mm → 62mm
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Re-bladed to match: properly sized blade for the new bore
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Designed as a clean, OEM-style upgrade for the FA24F intake path
Why it matters
A bigger bore alone isn’t the whole story—the blade and the way it sits in the bore matters too. By increasing the bore and matching the blade, you reduce the blockage and turbulence at the throttle, which can translate into:
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Less pressure drop at the throttle body
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More airflow headroom at high load
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A setup that supports bigger turbo / higher power goals without the TB being the “last dumb restriction” in the chain
Results note (real-world expectations)
In our testing, this 62mm re-bore + re-blade showed ~13% higher measured flow and about 1 psi less pressure drop at the throttle body at comparable conditions. Your exact results will vary based on turbo, intake piping, manifold, boost level, and calibration.
Fitment
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2022+ Subaru WRX VB (FA24F) only. Not compatible with the VA WRX.
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Drive-by-wire OEM-style mounting and connector
Install & tuning notes
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This is a bolt-on physical fit, but airflow vs. throttle angle can change.
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Requires a tune.
What’s included
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(1) Re-bored & re-bladed 62mm throttle body (modified OEM unit)
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Gasket and hardware are not included. Reuse OEM hardware as applicable.
This part needs a tune — here's how to get one
Opening the throttle body changes airflow versus throttle angle, so it has to be recalibrated. Options for your setup:
- BRZ Manifold + 62mm Throttle Body + Tune Bundle — this throttle body, the BRZ manifold adapter kit and the full custom calibration together, for less than buying the pieces.
- Atlas E-Tune — remote custom calibration if you already have the rest of the hardware.
- Teach-As-We-Go Tune — I calibrate your car and walk you through every change so you can do it yourself next time.
Also pairs with: BRZ Intake Manifold Adapter Kit · G25-660 turbo kit (calibration included)
Already have a completed GropeTuned tune on this vehicle? Use the $50 retune service to update it for the throttle-body change.