Garrett PowerMax Stage 1 Turbocharger Upgrade – GT2260S

Volkswagen Golf R MK7/MK7.5 & Audi S3 8V (EA888 Gen 3)

Take your EA888 Gen 3 to the next level with the Garrett PowerMax GT2260S Stage 1 Turbocharger. Designed as a true OEM-style replacement, the PowerMax delivers significantly increased airflow and power potential while retaining factory fitment and installation.

Engineered by Garrett Motorsport, the GT2260S features an upgraded compressor and turbine design, high-temperature Mar-M alloy turbine wheel, and a twin-scroll stainless steel turbine housing capable of handling extreme exhaust temperatures. Each turbocharger is supplied fully assembled with a factory-calibrated electronic actuator, making installation straightforward without the need for actuator calibration.

Capable of supporting up to 485HP (flywheel) with the appropriate supporting modifications and tuning, the PowerMax Stage 1 is an excellent upgrade for enthusiasts wanting fast spool, OEM-like drivability and increased performance.

Features

• Direct OEM replacement turbocharger
• Garrett PowerMax GT2260S Stage 1
• Supports up to 485HP (Flywheel)
• Approximately 17% more airflow than the factory IS38 turbo
• High-temperature Mar-M alloy turbine wheel
• Twin-scroll stainless steel turbine housing
• Rated for exhaust temperatures up to 1050°C
• Supplied fully assembled
• Factory-calibrated electronic actuator pre-installed
• Water & oil fitting kit included
• Direct bolt-on installation

Turbo Specifications

Includes

• Garrett PowerMax GT2260S Turbocharger
• Pre-calibrated electronic actuator
• Oil line hardware
• Water line hardware
• Required gaskets and seals

Suitable For

Volkswagen

• Golf R MK7 (2015–2017)
• Golf R MK7.5 (2017–2020)
• Golf GTI MQB (IS20 equipped)
• Golf 2.0 TSI (IS12 equipped)

Audi

• S3 8V (2015–2020)
• TTS 8S
• TT 2.0 TFSI
• A3 8V 2.0 TFSI
• A3 Quattro 2.0 TFSI

Replaces OEM Turbochargers

• IS12 – 06K145713L
• IS20 – 06K145702M
• IS38 – 06K145722H

Supporting Modifications Recommended

To achieve the full performance potential of the Garrett PowerMax Stage 1 turbocharger, supporting modifications are recommended:

• ECU Calibration
• High-flow intake
• Upgraded intercooler
• High-flow downpipe (where permitted)
• Performance spark plugs
• Upgraded HPFP (depending on fuel type and power goals)
• Quality engine oil with regular service intervals

Important Information

• Maximum turbocharger speed: 185,000 RPM
• Exceeding the maximum shaft speed may result in turbocharger damage and is not covered under warranty.
• Compressor housing is machined to accept Garrett turbo speed sensors (sold separately) for monitoring shaft speed on high-performance applications.
• Professional installation and ECU tuning are strongly recommended.

Part Number

Garrett PowerMax GT2260S Stage 1
PN: G898199-5001W

I would also recommend changing the power claim from "485hp at the wheels" to "Supports up to 485HP (Flywheel)", as Garrett's published rating is at the flywheel. Using "at the wheels" could overstate the turbo's capability and potentially cause confusion or customer disputes.