BMW · MSD81.X ECU · petrol

BMW 3 SERIES MSD81.X tuning files

Tuning file coverage for the BMW 3 SERIES running the MSD81.X ECU. Stock output across the matched variants spans 143–306 HP. There are 33 distinct variants on file for this combination. On this petrol engine the focus is sharper throttle and useful, repeatable gains. Every file is matched to the exact calibration on your vehicle and signed off by an operator.

Upload your file →All 3 SERIES coverage

Available solutions

Solutions that apply to the MSD81.X 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

33 distinct variants for the BMW 3 SERIES on the MSD81.X ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 306 HP
Calibration: 0044CC0IJE0SIFC3S

Variant 2

ECU

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

Variant 3

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 306 HP
Calibration: 0044CC0IJC0SILD1S

Variant 4

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 306 HP
Calibration: 0044CC0IJC0SIGA1S

Variant 5

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 306 HP
Calibration: 0044CC0IHD0SIGG1S

Variant 6

ECU

Catalog engine: 3000 306HP
Engine code: N55B30M0
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 306 HP
ECU HW: 6577475261
Calibration: 0044CC0IHD0SIGG1S

Variant 7

ECU

Catalog engine: 3000 306HP
Engine code: N55B30M0
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 306 HP
Calibration: 0044CC0IGD0SITA7S

Variant 8

ECU

Catalog engine: 3000 306HP
Engine code: N54B30O0
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 306 HP
ECU SW: 0044CC0IJE0S
ECU HW: 6577475205
Calibration: 0044CC0IJE0SIEB2S

Variant 9

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 306 HP
Calibration: 0044CC0IF80SITC2S

Variant 10

ECU

Catalog engine: 3000 306HP
Engine code: N54B30O0
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 306 HP
ECU HW: 6577475271
Calibration: 0044CC0IJE0SIEB3S

Variant 11

ECU

Catalog engine: 3000 306HP
Engine code: N55B30M0
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 306 HP
ECU SW: 0044CC0IF80S
ECU HW: 6577475255
Calibration: 0044CC0IF80SIEQ2S

Variant 12

ECU

Catalog engine: 3000 306HP
Engine code: N55B30M0
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 306 HP
Calibration: 0044CC0IF80SIFD2S

Variant 13

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 306 HP
ECU SW: 6577475125
ECU HW: 6577475259
Calibration: 0044CC0IGD0SIGG7S

Variant 14

ECU

Catalog engine: 3000 306HP
Engine code: N55B30M0
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 306 HP
Calibration: 0044CC0IF60SIFLDZ

Variant 15

ECU

Catalog engine: 3000 306HP
Engine code: N55B30M0
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 306 HP
ECU HW: 6577475259
Calibration: 0044CC0IGD0SIGG5S

Variant 16

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 306 HP
Calibration: 0044CC0IF80SIEZ2S

Variant 17

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 306 HP
Calibration: 0044CC0IJE0SIHT3S

Variant 18

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 306 HP
Calibration: 0044CC0IJE0SIFN3S

Variant 19

ECU

Catalog engine: 3000 306HP
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 306 HP
Calibration: 0044CC0IJE0SIDE3S

Variant 20

ECU

Catalog engine: 3000 300HP
Engine code: N54B30O0
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 300 HP
ECU SW: 6577475163
ECU HW: 6577475275
Calibration: 0044CC0ILA0SIJE7S

Variant 21

ECU

Catalog engine: 3000 265HP
Generation: G2x 03/2019-
Matched gains engine: 330d 265
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 265 HP
Stage 1 power: 310 HP
Power increase: +45 HP (+17%)
Stock torque: 620 Nm
Stage 1 torque: 720 Nm
Torque increase: +100 Nm (+16%)

Variant 22

ECU

Catalog engine: 3000 265HP
Generation: G2x 03/2019-
Matched gains engine: 330d 265
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 265 HP
Stage 1 power: 310 HP
Power increase: +45 HP (+17%)
Stock torque: 620 Nm
Stage 1 torque: 720 Nm
Torque increase: +100 Nm (+16%)
Calibration: 0044CC0IHF0SICV1S

Variant 23

ECU

Catalog engine: 3000 265HP
Generation: G2x 03/2019-
Matched gains engine: 330d 265
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 265 HP
Stage 1 power: 310 HP
Power increase: +45 HP (+17%)
Stock torque: 620 Nm
Stage 1 torque: 720 Nm
Torque increase: +100 Nm (+16%)
Calibration: 0044CC0IHF0SICG1S

Variant 24

ECU

Catalog engine: 3000 265HP
Engine code: N52B30
Generation: G2x 03/2019-
Matched gains engine: 330d 265
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 265 HP
Stage 1 power: 310 HP
Power increase: +45 HP (+17%)
Stock torque: 620 Nm
Stage 1 torque: 720 Nm
Torque increase: +100 Nm (+16%)
ECU SW: 7612455
ECU HW: 6577475261
Calibration: 0044CC0IHF0SICV1S

Variant 25

ECU

Catalog engine: 3000 265HP
Generation: G2x 03/2019-
Matched gains engine: 330d 265
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 265 HP
Stage 1 power: 310 HP
Power increase: +45 HP (+17%)
Stock torque: 620 Nm
Stage 1 torque: 720 Nm
Torque increase: +100 Nm (+16%)
Calibration: 0044CC0IHF0SIFW7S

Variant 26

ECU

Catalog engine: 325i 218HP
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 218 HP
Calibration: 0044CC0IHF0SIKS2S

Variant 27

ECU

Catalog engine: 325i 218HP
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 218 HP
Calibration: 0044CC0IHF0SIBF1S

Variant 28

ECU

Catalog engine: 325i 218HP
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 218 HP
Calibration: 0044CC0IHF0SICM9S

Variant 29

ECU

Catalog engine: 3000 218HP
Engine code: N53B30
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 218 HP
ECU HW: 6577475135
Calibration: 0044CC0IHD0SIKS7S

Variant 30

ECU

Catalog engine: 2000 170HP
Engine code: N43B20O0
Generation: F3x 12/2011-2015
Matched gains engine: 320i EDE 170
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 170 HP
Stage 1 power: 220 HP
Power increase: +50 HP (+29%)
Stock torque: 250 Nm
Stage 1 torque: 310 Nm
Torque increase: +60 Nm (+24%)
ECU SW: 6577475262
ECU HW: 6577475204
Calibration: 0044RD0QHC0SQBS2S

Variant 31

ECU

Catalog engine: 2000 170HP
Generation: F3x 12/2011-2015
Matched gains engine: 320i EDE 170
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 170 HP
Stage 1 power: 220 HP
Power increase: +50 HP (+29%)
Stock torque: 250 Nm
Stage 1 torque: 310 Nm
Torque increase: +60 Nm (+24%)
Calibration: 0044RD0QHC0SQBS5S

Variant 32

ECU

Catalog engine: 2000 143HP
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 143 HP
Calibration: 0044RD0QHA0SQAN5S

Variant 33

ECU

Catalog engine: 2000 143HP
Controller brand: SIEMENS
ECU: MSD81.X
Stock power: 143 HP
Calibration: 0044RD0QHA0SQDYCS

Related vehicles

Other vehicles built on the MSD81.X 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 MSD81.X?

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.X ECU software on this model?

Yes — the BMW 3 SERIES on the MSD81.X 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.