BMW · MG1CS003 ECU · petrol

BMW 3 SERIES MG1CS003 tuning files

Tuning file coverage for the BMW 3 SERIES running the MG1CS003 ECU. Stock output across the matched variants spans 184–462 HP. There are 41 distinct variants on file for this combination. On this petrol engine the focus is sharper throttle and useful, repeatable gains. Your file is built against the exact ECU software on the car, then operator-verified.

Upload your file →All 3 SERIES coverage

Available solutions

Solutions that apply to the MG1CS003 on this petrol platform. The exact set depends on the specific engine and software version.

Stage 1 Stage 2 Swirl Flaps OffLambda / O2OPF/GPF Off

Engine variants & ECU software

41 distinct variants for the BMW 3 SERIES on the MG1CS003 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 4400 462HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 462 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: FFFFFFFFFFFFFF
SW upgrade: FFFFFFFFFFFFFF
Calibration: FFFFFFFFFFFFFF_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 2

ECU

Catalog engine: 4400 462HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 462 HP

Variant 3

ECU

Catalog engine: 3000 340HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 340 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: 06070306FFFF00
SW upgrade: FFFFFFFFFFFFFF
Calibration: 06070306FFFF00_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 4

ECU

Catalog engine: 3000 340HP
Engine code: B58B30M0
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 340 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: C8C8C8C8C8C8C8
SW upgrade: FFFFFFFFFFFFFF
Calibration: C8C8C8C8C8C8C8_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 5

ECU

Catalog engine: 3000 340HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 340 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: 600C8012C00000
SW upgrade: FFFFFFFFFFFFFF
Calibration: 600C8012C00000_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 6

ECU

Catalog engine: 3000 340HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 340 HP

Variant 7

ECU

Catalog engine: 3000 340HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 340 HP
ECU SW: 88BE981BD17A03
ECU HW: C8C8C8C8C8C8C8
SW upgrade: FA6F39E74D7F73
Calibration: C8C8C8C8C8C8C8_88BE981BD17A03_FA6F39E74D7F73

Variant 8

ECU

Catalog engine: 2000 275HP
Engine code: B48B20M0
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 275 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: DEE9F5FEFF040C
SW upgrade: FFFFFFFFFFFFFF
Calibration: DEE9F5FEFF040C_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 9

ECU

Catalog engine: 2000 275HP
Engine code: B48B20A
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 275 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: FC030C161BB8BE
SW upgrade: FFFFFFFFFFFFFF
Calibration: FC030C161BB8BE_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 10

ECU

Catalog engine: 2000 275HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 275 HP

Variant 11

ECU

Catalog engine: 2000 252HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 252 HP

Variant 12

ECU

Catalog engine: 2000 252HP
Engine code: B48HB20M0
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 252 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: 08070807080708
SW upgrade: FFFFFFFFFFFFFF
Calibration: 08070807080708_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 13

ECU

Catalog engine: 2000 252HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 252 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: 600C8012C00000
SW upgrade: FFFFFFFFFFFFFF
Calibration: 600C8012C00000_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 14

ECU

Catalog engine: 2000 184HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: 000004080C1014
SW upgrade: FFFFFFFFFFFFFF
Calibration: 000004080C1014_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 15

ECU

Catalog engine: 2000 184HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: C8C8C8C8C8C8C8
SW upgrade: FFFFFFFFFFFFFF
Calibration: C8C8C8C8C8C8C8_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 16

ECU

Catalog engine: 2000 184HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP

Variant 17

ECU

Catalog engine: 2000 184HP
Engine code: B48B20M0
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: FFFFCDCDCDFFFF
SW upgrade: FFFFFFFFFFFFFF
Calibration: FFFFCDCDCDFFFF_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 18

ECU

Catalog engine: 2000 184HP
Engine code: B48B20A
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: 86939BA5ACB4BD
SW upgrade: FFFFFFFFFFFFFF
Calibration: 86939BA5ACB4BD_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 19

ECU

Catalog engine: 2000 184HP
Engine code: B48B20A
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU HW: 0261S18245

Variant 20

ECU

Catalog engine: 2000 184HP
Engine code: B48B20A
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU HW: 0261S18245
Calibration: R1C9I553BAETX5

Variant 21

ECU

Catalog engine: 2000 184HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: 20202000002020
SW upgrade: FFFFFFFFFFFFFF
Calibration: 20202000002020_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 22

ECU

Catalog engine: 2000 184HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: 747AA09FA16A6B
SW upgrade: FFFFFFFFFFFFFF
Calibration: 747AA09FA16A6B_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 23

ECU

Catalog engine: 2000 184HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: DEE9F5FEFF040C
SW upgrade: FFFFFFFFFFFFFF
Calibration: DEE9F5FEFF040C_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 24

ECU

Catalog engine: 2000 184HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: 23273100002020
SW upgrade: FFFFFFFFFFFFFF
Calibration: 23273100002020_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 25

ECU

Catalog engine: 2000 184HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: ED5EEDBA1D43B7
ECU HW: C8C8C8C8C8C8C8
SW upgrade: 20120F4102047B
Calibration: C8C8C8C8C8C8C8_ED5EEDBA1D43B7_20120F4102047B

Variant 26

ECU

Catalog engine: 2000 184HP
Engine code: B48B20A
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: D6E2EEF5FBFF06
SW upgrade: FFFFFFFFFFFFFF
Calibration: D6E2EEF5FBFF06_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 27

ECU

Catalog engine: 2000 184HP
Engine code: B48B20A
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
Calibration: R1C9J8B2BAETX4

Variant 28

ECU

Catalog engine: 2000 184HP
Engine code: B48B20A
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: B701BE01C401CC
SW upgrade: FFFFFFFFFFFFFF
Calibration: B701BE01C401CC_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 29

ECU

Catalog engine: 2000 184HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: 94979F9F9F9E92
SW upgrade: FFFFFFFFFFFFFF
Calibration: 94979F9F9F9E92_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 30

ECU

Catalog engine: 2000 184HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: DA71C054DB9B0A
ECU HW: 00000000000000
SW upgrade: 0960E71C2C0122
Calibration: 00000000000000_DA71C054DB9B0A_0960E71C2C0122

Variant 31

ECU

Catalog engine: 2000 184HP
Engine code: B48B20A
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
Calibration: R0C9I553BAGGX7

Variant 32

ECU

Catalog engine: 2000 184HP
Engine code: B48B20A
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU HW: 0261xxxxxx
Calibration: R1C9F359BAHBX2

Variant 33

ECU

Catalog engine: 2000 184HP
Engine code: B48B20A
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: 00000000000000
SW upgrade: FFFFFFFFFFFFFF
Calibration: 00000000000000_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 34

ECU

Catalog engine: 2000 184HP
Engine code: B48B20A
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: 00003076501103
ECU HW: 00003072000120
SW upgrade: 00007AB3501107
Calibration: 00003072000120_00003076501103_00007AB3501107

Variant 35

ECU

Catalog engine: 2000 184HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: B88C8A8C9095A0
SW upgrade: FFFFFFFFFFFFFF
Calibration: B88C8A8C9095A0_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 36

ECU

Catalog engine: 2000 184HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: 00000000000000
ECU HW: C8C8C8C8C8C8C8
SW upgrade: 00000000000000
Calibration: C8C8C8C8C8C8C8_00000000000000_00000000000000

Variant 37

ECU

Catalog engine: 2000 184HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: 600C8012C00000
SW upgrade: FFFFFFFFFFFFFF
Calibration: 600C8012C00000_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 38

ECU

Catalog engine: 2000 184HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU HW: 23273100002020

Variant 39

ECU

Catalog engine: 2000 184HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: 10101010101010
SW upgrade: FFFFFFFFFFFFFF
Calibration: 10101010101010_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 40

ECU

Catalog engine: 2000 184HP
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
ECU SW: FFFFFFFFFFFFFF
ECU HW: 713F45494E585A
SW upgrade: FFFFFFFFFFFFFF
Calibration: 713F45494E585A_FFFFFFFFFFFFFF_FFFFFFFFFFFFFF

Variant 41

ECU

Catalog engine: 2000 184HP
Engine code: B48B20A
Controller brand: BOSCH
ECU: MG1CS003
Stock power: 184 HP
Calibration: R1C9J8I2BAKQX4

Related vehicles

Other vehicles built on the MG1CS003 controller or the same engine — handy when a platform spans several models and makes.

Questions, answered.

Which tuning solutions are available for the BMW 3 SERIES on the MG1CS003?

Stage 1, Stage 2, Swirl Flaps Off, Lambda / O2, OPF/GPF Off. The exact set depends on the specific engine and software version.

Do you cover the MG1CS003 ECU software on this model?

Yes — the BMW 3 SERIES on the MG1CS003 ECU is part of the catalog. Upload your original file and it is matched to the right calibration before any work is done.

How is the file delivered?

Through the TuningBay workflow with operator validation and one safe, sensible result per job. Files we deliver, we stand behind.