BMW E46 M3 Steuergeräte-Upgrade

FREE - MoTeC GPS-L10 included with every Calibrated Performance ECU Upgrade Kit purchase until the end of Wednesday, 30th September 2026

Taxes and Shipping Calculated at checkout

Expert Support Included

Every kit comes with one hour of dedicated support from one of our performance engineers. We'll guide you through installation, get your system running, and handle basic sensor checks. Quick setup questions are available live whenever you need them—no booking required. For deeper troubleshooting requiring remote diagnostics or data analysis, we'll schedule a one-on-one session with one of our experts within your included hour. Ready to extract every last bit of performance from your setup? Our Remote Support Package gives you ongoing access to our engineers for custom tuning, bespoke builds, and advanced optimization.