Stage 2 tuning explained

What makes a car Stage 2

Stage 2 assumes the car has supporting modifications. Common examples are a cold-air or performance intake, a cat-back or sports exhaust, and an upgraded intercooler or boost pipework.

The file raises boost and fuelling targets to match the extra airflow. Without the supporting parts, the calibration would push the stock hardware beyond what it was designed for.

Results vary by engine, fuel, condition and supporting hardware, and no gain or outcome is guaranteed.

Stage 2 car

Pricing: Master file price €100 ex VAT · slave (Tier E) €60.

The Stage 2 car file is priced above Stage 1 because it is written around a specific modification set. We need an accurate list before we quote the file.

Tell us every part fitted, with brand and model where you know it. A missing or mismatched part is the most common reason for an unexpected result.

• List all intake, exhaust, intercooler and boost-pipe changes.
• Give the fuel you run, usually 95 or 98 for petrol, or the diesel grade.
• Say whether the car has an upgraded clutch, gearbox or differential, as this affects launch and torque limits.
• Send the original read and the ECU part number.

Common codes

• P0234Turbocharger overboost condition. Boost pressure went above the safe limit.
• P0299Turbocharger underboost condition. Boost pressure stayed below the target, so the ECU logs an underboost fault.
• P0088Fuel rail or system pressure too high. Rail pressure went above the commanded limit.
• P2263Turbocharger boost system performance. Boost is not following the commanded target closely enough.

Stage 2 launch and pop-and-bang add-ons

Launch control and pop-and-bang maps are sold as add-ons and can be combined with a Stage 2 file. Both change how the car behaves under specific conditions, so they are described in the performance guide.

Common fault codes

Codes vary by make, model and ECU. Read the stored codes on your own car before and after flashing.

• P0234Turbocharger overboost condition. Boost pressure went above the safe limit.
• P0299Turbocharger underboost condition. Boost pressure stayed below the target, so the ECU logs an underboost fault.
• P0088Fuel rail or system pressure too high. Rail pressure went above the commanded limit.
• P2263Turbocharger boost system performance. Boost is not following the commanded target closely enough.