Volkswagen Mk8 Golf GTI EA888 Evo4: a simple path to ~447 HP
If you’ve got a Volkswagen Golf GTI with the EA888 Evo4 (Gen4) 2.0 TSI, you’re sitting on one of the most tune-friendly modern turbo platforms out there. And if your goal is a clean, OEM-style turbo upgrade that can support ~447 HP, Garrett has basically built the “bolt-on and calibrate” answer: the Garrett PowerMax™ Direct Fit Performance Turbocharger (PN: 917056-5002S).
Garrett states this complete direct-fit assembly (with electronic actuator) supports up to 447 BHP (333 kW) based on on-vehicle results—so you’re not chasing a number built on hopes and forum math.
Why this turbo is the sweet spot for a fast GTI build
he whole idea behind PowerMax™ is more performance without turning your engine bay into a custom fab project:
- Direct-fit turbo with electronic actuator (OEM-style packaging)
- Up to +32% compressor flow vs OEM thanks to GTX Gen II aero
- Up to +50% turbine flow vs OEM (better high-RPM breathing)
- High-temp durability: Mar-M turbine wheel + twin-scroll stainless turbine housing rated to 1050°C
- Turbo speed sensor provision, with a stated max allowable speed of 186 krpm (important when tuning hard)
- Listed as CARB Emissions Certified D-871-2 (always confirm applicability for your market/setup)
In short: it’s built to deliver a big jump in airflow and power potential, while keeping the “fits like it should” vibe.
“447 HP” — what Garrett’s own on-vehicle results used
Garrett’s published test setup is refreshingly realistic for a strong street-style build:
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GTI 2.0L TFSI (EA888 Evo4)
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Stock intercooler
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Custom downpipe
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Stock fuel system
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98 octane unleaded
That’s the key takeaway: you’re not required to reinvent the car to be in the right neighborhood—but the tune and supporting airflow/exhaust matter.
Garrett also explicitly notes that results are highly dependent on your vehicle’s modifications and tuning/calibration
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Performance
Garrett Powermax Drop in Turbo for VW 2.0L MK8 EA888 Engine 2020+
€ 2.227,44 Add to cart
