BMW 120i Stage 1 Engine & Gearbox Map! Massive Gains!

This BMW 120i came in completely stock and left with a Stage 1 engine and gearbox calibration that genuinely transforms how the car drives. In this video we carry out a full ECU + TCU remap, improving power delivery, torque, throttle response, and gearbox behaviour. The result is a car that feels sharper, faster, and far more responsive without compromising daily drivability. 📈 Results: +94 BHP +158 NM No hardware changes. Just proper calibration, done correctly. If you’re considering a Stage 1 map and want to see what real gains look like, this is exactly the sort of result you should expect when the car is healthy and mapped properly. 📍 Based in Ilkeston, DE7 8EF 📧 Enquiries: [email protected] We offer ECU and gearbox tuning, diagnostics, and performance upgrades across a wide range of BMW models and beyond. Drop a comment if you’ve got questions about your setup or want to see a specific car featured next.