More and more modern cars leave the factory with a locked, encrypted ECU — Bosch’s MG1, MD1 and MDG1 families — that can’t be read or written the old OBD way. On BMW that’s most cars built after June 2020; on Porsche, Land Rover, VAG and others it has been the norm for years. A lot of tuners simply can’t touch them.
We can. We bench-unlock these ECUs in-house — and the list keeps growing. Here’s what we currently unlock and the cars each one covers, whether you’re local to Warrington or posting your ECU in from anywhere in the UK.
Bosch MG1CS024 & MG1CS201 (petrol) and MD1CP032 & MD1CS001 (diesel) cover the B48, B58, S55, S58, B47 and B57 engines — think 330i, 340i, M140i, M240i, M340i, 440i, 540i, Z4 M40i, M2, M3 and M4, plus 320d, 420d, 520d, X3 30d and X5 40d. This is the “locked ECU” you’ll hear about on post-June-2020 cars.
MG1CP007, MG1CS047 and MG1CS008 cover the petrol Cayenne, Panamera, Macan and 911.
MD1CS004 (2.0 TDI, EA288 evo) plus MG1CS002, MG1CS031 and MG1CS163 (TSI petrol, EA888) cover cars like the Golf, Golf R, Passat, A3, A4, S3, Tiguan and Cupra.
MD1CP007 & MD1CP017 (Ingenium diesel) and MG1CS028 (Ingenium petrol) cover the Discovery, Range Rover, Range Rover Sport, Velar, Defender and F-Pace.
Unlocking is done on the bench, in-house — we read the locked ECU, unlock it, and it’s ready for tuning or a clean return to stock, fully reversible. If you’re a BMW owner booking a Stage 1, it’s built into your appointment; if you’re a fellow trader or a DIYer, you can post the ECU in from anywhere in the UK.
See the full, up-to-date list on our ECU unlocking page, or send us your ECU part number and we’ll confirm. Not sure if your car is affected? Our G20 320d guide explains the post-2020 locked-ECU situation.
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