BMW · MSD81 ECU · petrol

BMW X SERIES MSD81 tuning files

Everything we work with on the BMW X SERIES fitted with the MSD81. The matched variants sit between 306 and 306 HP from the factory. 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 X SERIES coverage

Available solutions

Applicable work for the MSD81 on this petrol. The available set firms up once the exact engine and software are known.

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

Engine variants & ECU software

27 distinct variants for the BMW X SERIES on the MSD81 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 3000 306HP
Engine code: N54B30
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
ECU SW: 6577475255
ECU HW: 6577475205
SW upgrade: UK30297
Calibration: UK30297

Variant 2

ECU

Catalog engine: 3000 306HP
Engine code: N54B30
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
ECU SW: 6577475153
ECU HW: 6577475271
Calibration: 0044CC0IJE0SIDD2S

Variant 3

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP

Variant 4

ECU

Catalog engine: 3000 306HP
Engine code: N54B30
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
ECU SW: 6577475153
ECU HW: 6577475271
SW upgrade: LJ78928
Calibration: LJ78928

Variant 5

ECU

Catalog engine: 3000 306HP
Engine code: N54B30
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
ECU SW: 6577475153
ECU HW: 6577475271
SW upgrade: C137184
Calibration: C137184

Variant 6

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
SW upgrade: LJ79361
Calibration: LJ79361

Variant 7

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
SW upgrade: L225787
Calibration: L225787

Variant 8

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
SW upgrade: L220366
Calibration: L220366

Variant 9

ECU

Catalog engine: 3000 306HP
Engine code: N54B30
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
ECU SW: 6577475153
ECU HW: 6577475271
SW upgrade: LJ78785
Calibration: LJ78785

Variant 10

ECU

Catalog engine: 3000 306HP
Engine code: N54B30
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
ECU SW: 6577475153
ECU HW: 6577475271
SW upgrade: L342561
Calibration: L342561

Variant 11

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
SW upgrade: L196800
Calibration: L196800

Variant 12

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
SW upgrade: L341701
Calibration: L341701

Variant 13

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
SW upgrade: L196921
Calibration: L196921

Variant 14

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
SW upgrade: L373576
Calibration: L373576

Variant 15

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
SW upgrade: C166195
Calibration: C166195

Variant 16

ECU

Catalog engine: 3000 306HP
Engine code: N55B30M0
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
ECU SW: 6577475135
ECU HW: 6577475261
SW upgrade: L346651
Calibration: L346651

Variant 17

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
SW upgrade: 0044CC0IGE0SIDC5S
Calibration: 0044CC0IGE0SIDC5S

Variant 18

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
SW upgrade: C166014
Calibration: C166014

Variant 19

ECU

Catalog engine: 3000 306HP
Engine code: N54B30
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
ECU SW: 6577475255
ECU HW: 6577475205
SW upgrade: 0044CC0IF65SIDC6S
Calibration: 0044CC0IF65SIDC6S

Variant 20

ECU

Catalog engine: 3000 306HP
Engine code: N54B30
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
ECU SW: 6577475153
ECU HW: 6577475271
SW upgrade: VJ82480
Calibration: VJ82480

Variant 21

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
SW upgrade: L389066
Calibration: L389066

Variant 22

ECU

Catalog engine: 3000 306HP
Engine code: N55B30M0
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
ECU SW: 6577475127
ECU HW: 6577475259
SW upgrade: 0044CC0IGE0SILA2S
Calibration: 0044CC0IGE0SILA2S

Variant 23

ECU

Catalog engine: 3000 306HP
Engine code: N54B30
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
ECU SW: 6577475153
ECU HW: 6577475271
SW upgrade: L197683
Calibration: L197683

Variant 24

ECU

Catalog engine: 3000 306HP
Engine code: N55B30M0
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
ECU SW: 6577475127
ECU HW: 6577475259
SW upgrade: LJ78376
Calibration: LJ78376

Variant 25

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
SW upgrade: LG15728
Calibration: LG15728

Variant 26

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
SW upgrade: 0044CC0IHD0SILA1S
Calibration: 0044CC0IHD0SILA1S

Variant 27

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81
Stock power: 306 HP
SW upgrade: LL31061
Calibration: LL31061

Related vehicles

Other vehicles built on the MSD81 controller or the same engine — handy when a platform spans several models and makes.

Questions, answered.

Which tuning solutions are available for the BMW X SERIES on the MSD81?

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 MSD81 ECU software on this model?

Yes — the BMW X SERIES on the MSD81 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.