Stage 1
A healthy standard vehicle will usually need no hardware changes before a sensible Stage 1 calibration.
Upgrade parts for your BMW M3
Hardware should be selected around the engine, fuel system, tuning stage and intended use - not from a generic parts list.
Stage 2
Intercooler, intake, exhaust and charge-cooling requirements are reviewed against this exact powertrain before quoting.
Custom builds
Turbo, fuelling, sensor and engine upgrades are assessed as one system so the calibration matches the fitted hardware.
Before you buy parts
Send us the current specification and your target first so we can check that the proposed combination makes sense.
Selected: BMW M3 E46 · E46 M3 CSL 360HP Petrol