Why are bmw ECUs so difficult to tune? It's because Bosch puts crazy firewalls on them, requiring a trip to Finland for a specific type of ecu tuning. Femto tuning is currently the only solution for a ...

A few years ago, Auto Bild ran a long-term reliability test on the BMW M3, dismantled it after 62,000 miles of hard driving, and found it flawless.

With BMW losing more than 10% of its profit to tariffs and pressure building into 2026, automakers may start passing the cost directly to buyers.

A BMW E92 M3 is shown in a workshop with upgraded exhaust components during a performance build featuring primary cat deletes and ECU tuning.