MINI Gen 2 Engine & ECU

The MINI Gen 2 engine refers to the second-generation power units used in MINI models from 2006–2013, including the R56, R55, R57, and R58. These engines include the N14 and N18 turbocharged petrol engines developed with PSA.

MINI Gen 2 engines and ECUs are found in the R55 Clubman, R56 Hatch, R57 Convertible, R58 Coupe, and R59 Roadster. Most models use the N14 (earlier) or N18 (later) engines, paired with Bosch ECUs.

The N14 engine is known for early carbon build-up and timing chain issues, while the N18 offers improved reliability, variable valve timing on the intake and exhaust cams, and a revised PCV system.

Yes, upgrading the ECU with a remap or tuning software can unlock performance gains, improve throttle response, and enhance fuel economy—especially when combined with performance parts.

When performed by a trusted tuner like Lohen, ECU remapping is safe and tailored to your car's hardware and usage. We ensure reliability and engine health are prioritised during tuning.

Depending on your MINI’s engine and supporting modifications, ECU tuning can deliver gains of 20–40+ bhp on a standard N14 or N18 engine.

Typical ECU-related problems include sensor failures, turbo overboost codes, and immobiliser issues. At Lohen, we offer diagnostic services to pinpoint and resolve these faults.

While a remap can be done on a stock engine, intake, exhaust, intercooler, and turbo upgrades help maximise the gains and reliability of your MINI Gen 2 after tuning.

Signs of a faulty ECU include engine misfires, poor fuel economy, starting issues, and dashboard error lights. A professional diagnosis is essential before considering ECU replacement.

Tuned Gen 2 engines benefit from more frequent oil changes - typically every 5,000 - 6,000 miles - to keep internal components well lubricated and running smoothly.