Stage 2 remapping is a more aggressive ECU tune that requires supporting hardware upgrades to safely make more power than Stage 1.

Here’s a clear explanation:

What “Stage 2” means

Unlike Stage 1 (software only), Stage 2 = software + hardware.
The ECU is remapped to take advantage of improved airflow and cooling from upgraded parts.

Typical hardware required

Varies by car, but usually includes:

• High-flow intake (better air in)
• Upgraded exhaust or downpipe (better air out)
• Larger or more efficient intercooler (cooler air = safer power)
• Sometimes stronger spark plugs or fuel pump upgrades

What the remap changes

The ECU tune increases:

• Turbo boost pressure
• Fuel delivery
• Ignition timing (within safe limits)
• Torque limits

All calibrated specifically for the new hardware.

Performance gains (approx.)

• Turbo petrol cars: +30–60% power over stock
• Turbo diesel cars: +25–50% torque increase
• Gains are larger than Stage 1 and more noticeable at higher RPM

Example:

• 200 hp stock → 260–300 hp Stage 2 (car-dependent)

Pros

• Big jump in power and torque
• Much stronger mid-range and top-end
• Better throttle response under load

Cons / things to know

• More stress on engine, clutch, gearbox

• Often not road-legal in some regions (emissions/noise)

• Warranty usually void

• Requires good maintenance and quality fuel

Stage 1 vs Stage 2 (quick recap)

• Stage 1: stock hardware, mild tune, daily-friendly

• Stage 2: upgraded hardware, aggressive tune, performance-focused