Stage 1
A healthy standard vehicle will usually need no hardware changes before a sensible Stage 1 calibration.
Upgrade parts for your BMW 3 Series
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 3 Series E46 · 318d 318d M47D20 116HP Diesel