RacingLine PCM Tuning Box for 2.0 TSI 2025+ Volkswagen Golf R/Audi S3

The Only Current Tuning Solution for 2025+ EA888.4 Golf R & S3

The latest 2025+ VW Group 2.0 TSI EA888.4 engines—found in models like the Golf R and Audi S3 8Y.5—are not yet tunable via traditional ECU remapping. The RacingLine PCM (Power Control Module) changes that, delivering a safe, trace-free performance boost you can feel immediately.

Expect gains of up to +60 HP and +70 lb-ft of torque, with beautifully smooth, progressive power delivery across the entire rev range—not just at peak.

Why RacingLine PCM is Different

• Exclusive for EA888.4 Continental Turbo Models – Precision-engineered specifically for 2025+ Golf R and S3 engines.
• Free ECU Tune Upgrade – When full ECU software becomes available, PCM owners get a free upgrade to Stage 1, 1+, or 2 tunes (when purchased from an authorized RacingLine OEM+ Software dealer).
• Completely Reversible – Remove anytime without leaving any physical or digital trace.
• Motorsport-Calibrated Power Delivery – Focused on the “area under the curve” for faster acceleration and stronger mid-range torque.
• Premium Build – CNC-machined billet aluminum case with cooling fins, plus a custom-fit mounting bracket that secures directly to the top of your vehicle’s battery.
• Perfect Fit Harness – Wiring loom cut to the exact length for a clean, factory-style installation.

How PCM Works

The RacingLine PCM is a standalone control unit with its own PCB, developed over 12 months by RacingLine’s in-house calibration team. It communicates with the factory ECU in real time, optimizing sensor signals to safely raise boost pressure, refine fueling, and enhance ignition timing—all while keeping factory safety parameters intact.

Key Benefits

• Up to +60 HP / +70 lb-ft torque
• Trace-free removal for warranty peace of mind
• High-quality billet aluminum housing with cooling fins
• Specific battery-top mounting bracket for secure fitment
• Future-proof with free ECU tune upgrade

• Free US shipping on orders over $250.
• Free pickup at our Dallas shop, usually ready within 24 hours.
• Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
• Want it installed? Book the install at thegbmotors.com.

Full details are on our shipping and returns page.