Description
2024 BMW X4 M40i ECU tuning.
Published factory figures: 382 HP, 365 TQ.
Stage 1: 485 HP, 490 TQ, Stock exhaust.
Stage 2: 505 HP, 555 TQ, Downpipes Required.
DME retains the original ECU calibration for returning the vehicle to stock. The calibration changes throttle response and torque management.
Listed functions: octane-specific calibration; downpipe (off-road use only); speed-limiter changes; cold-start control; burble adjustment where available.
Mail the ECU for programming. Instructions are emailed after checkout; include the completed ECU Information form downloadable from the homepage.
The buyer pays shipping in both directions; the return charge is added at checkout.
