Description
2021 BMW 430xi ECU tuning.
Published factory figures: 248 HP, 258 TQ.
Stage 1: 330 HP, 340 TQ, Stock exhaust.
Stage 2: 350 HP, 360 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.
Disable iDrive automatic updates: Car > Settings > General Settings > Data Privacy > No Service. Decline app updates; Updates can relock the ECU and erase the tune/unlock.
