The Automotive Clinic — Tuning Files

Software 10SW002121 Bosch MG1CS003

13 master projects carry this software number, 12 with a modified version. Upload your read to have the tune transferred into your own file, or buy the file exactly as we hold it by software number. Modified files from $275, original (stock) files from $75 AUD. Trade accounts see their own pricing after log in.

Fitted to

BMW 3 Serie - Sedan ×8
BMW 3er 320i
BMW 3 Serie - Sedan 320i
BMW 4 Serie - Coupe
BMW 3-Series 320i 6MT - 184hp
BMW 4er 430i

ECU

Bosch
MG1CS003
Bosch

Hardware / part numbers

DME8.4.1-B48-LK-B20-M0-F030-EU6-HGAG--_L
DME8.4.1-B48-LK-B20-M0-F030-JPN-------_J
DME8.4.1-B48-LK-B20-M0-F032-EU6-HGAG--_L
DME8.4.1-B48-LK-B20-O0-F030-EU6-HGAG--_L
DME8.4.1-B48-LK-B20-O0-F30-EU6-HGAG---_L
DME8.4.1-B48-LK-B20-O0-F30-JPN--------_J

Read with

any full read from your flashing tool

Modifications available

Have the read? Upload it.
Your own file comes back with the modification built in, checked for a 100% match before it's offered.
Upload your read →
Can't read the ECU? Buy by software number.
The stock or modified file exactly as we hold it, to write with your tool. Make sure your ECU carries 10SW002121 and the same hardware number.
See files & prices →

Vehicle pages: BMW 3 Serie - Sedan · BMW 3-Series · BMW 3er · BMW 4 Serie - Coupe · BMW 4er

Files are supplied for off-road / motorsport use; checksums are corrected by your flashing tool on write. Last project update 2026-09-22.

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