FIAT · MM8GMK ECU · diesel

FIAT 500X MM8GMK tuning files

FIAT 500X on the MM8GMK: matched, calibrated and delivered with care. Across the matched variants stock power runs from 140 to 160 HP. On this diesel, expect the complete diesel toolset — from Stage work to the common delete requests. Your file is built against the exact ECU software on the car, then operator-verified.

Upload your file →All 500X coverage Custom ECU tuning file service

Available solutions

What we can run on the MM8GMK for this diesel — the precise options narrow down by engine and software version.

Stage 1 Stage 2 DPF Off EGR Off Swirl Flaps OffLambda / O2MAF OffTVANOx OffAGSReadinessStart/Stop OffOil PressureLimp Mode Off

Engine variants & ECU software

20 distinct variants for the FIAT 500X on the MM8GMK ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 1400 160HP
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 160 HP
ECU SW: 30630000
ECU HW: MM8GMKHW690
SW upgrade: 55235909
Calibration: MM8GMKHW690_30630000_55235909

Variant 2

ECU

Catalog engine: 1400 160HP
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 160 HP
ECU SW: 3094031A
ECU HW: MM8GMKHW690
SW upgrade: 155251789
Calibration: MM8GMKHW690_3094031A_155251789

Variant 3

ECU

Catalog engine: 1400 140HP
Generation: 2014-2018
Matched gains engine: 1.4 Multiair 140
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 140 HP
Stage 1 power: 165 HP
Power increase: +25 HP (+18%)
Stock torque: 230 Nm
Stage 1 torque: 300 Nm
Torque increase: +70 Nm (+30%)
ECU SW: 3V713MH8
ECU HW: MM8GMKHW670
SW upgrade: 52032228
Calibration: MM8GMKHW670_3V713MH8_52032228

Variant 4

ECU

Catalog engine: 1400 140HP
Generation: 2014-2018
Matched gains engine: 1.4 Multiair 140
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 140 HP
Stage 1 power: 165 HP
Power increase: +25 HP (+18%)
Stock torque: 230 Nm
Stage 1 torque: 300 Nm
Torque increase: +70 Nm (+30%)
ECU SW: 3V862QH9
ECU HW: MM8GMKHW670
SW upgrade: 52065030
Calibration: MM8GMKHW670_3V862QH9_52065030

Variant 5

ECU

Catalog engine: 1400 140HP
Generation: 2014-2018
Matched gains engine: 1.4 Multiair 140
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 140 HP
Stage 1 power: 165 HP
Power increase: +25 HP (+18%)
Stock torque: 230 Nm
Stage 1 torque: 300 Nm
Torque increase: +70 Nm (+30%)
ECU SW: 3V714MH8
ECU HW: MM8GMKHW670
SW upgrade: 52042783
Calibration: MM8GMKHW670_3V714MH8_52042783

Variant 6

ECU

Catalog engine: 1400 140HP
Generation: 2014-2018
Matched gains engine: 1.4 Multiair 140
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 140 HP
Stage 1 power: 165 HP
Power increase: +25 HP (+18%)
Stock torque: 230 Nm
Stage 1 torque: 300 Nm
Torque increase: +70 Nm (+30%)
ECU SW: 3V714MH5
ECU HW: MM8GMKHW670
SW upgrade: 52042784
Calibration: MM8GMKHW670_3V714MH5_52042784

Variant 7

ECU

Catalog engine: 1400 140HP
Generation: 2014-2018
Matched gains engine: 1.4 Multiair 140
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 140 HP
Stage 1 power: 165 HP
Power increase: +25 HP (+18%)
Stock torque: 230 Nm
Stage 1 torque: 300 Nm
Torque increase: +70 Nm (+30%)
ECU SW: 3V861NH7
ECU HW: MM8GMKHW670
SW upgrade: 52057486
Calibration: MM8GMKHW670_3V861NH7_52057486

Variant 8

ECU

Catalog engine: 1400 140HP
Generation: 2014-2018
Matched gains engine: 1.4 Multiair 140
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 140 HP
Stage 1 power: 165 HP
Power increase: +25 HP (+18%)
Stock torque: 230 Nm
Stage 1 torque: 300 Nm
Torque increase: +70 Nm (+30%)
ECU SW: 3V862MH9
ECU HW: MM8GMKHW670
SW upgrade: 52067188
Calibration: MM8GMKHW670_3V862MH9_52067188

Variant 9

ECU

Catalog engine: 1400 140HP
Generation: 2014-2018
Matched gains engine: 1.4 Multiair 140
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 140 HP
Stage 1 power: 165 HP
Power increase: +25 HP (+18%)
Stock torque: 230 Nm
Stage 1 torque: 300 Nm
Torque increase: +70 Nm (+30%)
ECU SW: 3V723NG6
ECU HW: MM8GMKHW670
SW upgrade: 52036400
Calibration: MM8GMKHW670_3V723NG6_52036400

Variant 10

ECU

Catalog engine: 1400 140HP
Generation: 2014-2018
Matched gains engine: 1.4 Multiair 140
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 140 HP
Stage 1 power: 165 HP
Power increase: +25 HP (+18%)
Stock torque: 230 Nm
Stage 1 torque: 300 Nm
Torque increase: +70 Nm (+30%)
ECU SW: 3V723NH6
ECU HW: MM8GMKHW670
SW upgrade: 52044832
Calibration: MM8GMKHW670_3V723NH6_52044832

Variant 11

ECU

Catalog engine: 1400 140HP
Generation: 2014-2018
Matched gains engine: 1.4 Multiair 140
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 140 HP
Stage 1 power: 165 HP
Power increase: +25 HP (+18%)
Stock torque: 230 Nm
Stage 1 torque: 300 Nm
Torque increase: +70 Nm (+30%)
ECU SW: 3V723NH6
ECU HW: MM8GMKHW670
SW upgrade: 52041698
Calibration: MM8GMKHW670_3V723NH6_52041698

Variant 12

ECU

Catalog engine: 1400 140HP
Generation: 2014-2018
Matched gains engine: 1.4 Multiair 140
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 140 HP
Stage 1 power: 165 HP
Power increase: +25 HP (+18%)
Stock torque: 230 Nm
Stage 1 torque: 300 Nm
Torque increase: +70 Nm (+30%)
ECU SW: 3V862MG9
ECU HW: MM8GMKHW670
SW upgrade: 52067189
Calibration: MM8GMKHW670_3V862MG9_52067189

Variant 13

ECU

Catalog engine: 1400 140HP
Generation: 2014-2018
Matched gains engine: 1.4 Multiair 140
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 140 HP
Stage 1 power: 165 HP
Power increase: +25 HP (+18%)
Stock torque: 230 Nm
Stage 1 torque: 300 Nm
Torque increase: +70 Nm (+30%)
ECU SW: 3V724RH7
ECU HW: MM8GMKHW670
SW upgrade: 52212981
Calibration: MM8GMKHW670_3V724RH7_52212981

Variant 14

ECU

Catalog engine: 1400 140HP
Generation: 2014-2018
Matched gains engine: 1.4 Multiair 140
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 140 HP
Stage 1 power: 165 HP
Power increase: +25 HP (+18%)
Stock torque: 230 Nm
Stage 1 torque: 300 Nm
Torque increase: +70 Nm (+30%)
ECU SW: 30910000
ECU HW: MM8GMKHW690
SW upgrade: 22222222
Calibration: MM8GMKHW690_30910000_22222222

Variant 15

ECU

Catalog engine: 1400 140HP
Generation: 2014-2018
Matched gains engine: 1.4 Multiair 140
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 140 HP
Stage 1 power: 165 HP
Power increase: +25 HP (+18%)
Stock torque: 230 Nm
Stage 1 torque: 300 Nm
Torque increase: +70 Nm (+30%)
ECU SW: 30802000
ECU HW: MM8GMKHW690
SW upgrade: 22222222
Calibration: MM8GMKHW690_30802000_22222222

Variant 16

ECU

Catalog engine: 1400 140HP
Generation: 2014-2018
Matched gains engine: 1.4 Multiair 140
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 140 HP
Stage 1 power: 165 HP
Power increase: +25 HP (+18%)
Stock torque: 230 Nm
Stage 1 torque: 300 Nm
Torque increase: +70 Nm (+30%)
ECU SW: 3V862QG9
ECU HW: MM8GMKHW670
SW upgrade: 52065026
Calibration: MM8GMKHW670_3V862QG9_52065026

Variant 17

ECU

Catalog engine: 1400 140HP
Generation: 2014-2018
Matched gains engine: 1.4 Multiair 140
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 140 HP
Stage 1 power: 165 HP
Power increase: +25 HP (+18%)
Stock torque: 230 Nm
Stage 1 torque: 300 Nm
Torque increase: +70 Nm (+30%)
ECU SW: 3V862NH8
ECU HW: MM8GMKHW670
SW upgrade: 52065031
Calibration: MM8GMKHW670_3V862NH8_52065031

Variant 18

ECU

Catalog engine: 1400 140HP
Generation: 2014-2018
Matched gains engine: 1.4 Multiair 140
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 140 HP
Stage 1 power: 165 HP
Power increase: +25 HP (+18%)
Stock torque: 230 Nm
Stage 1 torque: 300 Nm
Torque increase: +70 Nm (+30%)
ECU SW: 3V861MH9
ECU HW: MM8GMKHW670
SW upgrade: 52058740
Calibration: MM8GMKHW670_3V861MH9_52058740

Variant 19

ECU

Catalog engine: 1400 140HP
Generation: 2014-2018
Matched gains engine: 1.4 Multiair 140
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 140 HP
Stage 1 power: 165 HP
Power increase: +25 HP (+18%)
Stock torque: 230 Nm
Stage 1 torque: 300 Nm
Torque increase: +70 Nm (+30%)
ECU SW: 3V714QG7
ECU HW: MM8GMKHW670
SW upgrade: 52042901
Calibration: MM8GMKHW670_3V714QG7_52042901

Variant 20

ECU

Catalog engine: 1400 140HP
Generation: 2014-2018
Matched gains engine: 1.4 Multiair 140
Controller brand: MAGNETI MARELLI
ECU: MM8GMK
Stock power: 140 HP
Stage 1 power: 165 HP
Power increase: +25 HP (+18%)
Stock torque: 230 Nm
Stage 1 torque: 300 Nm
Torque increase: +70 Nm (+30%)
ECU SW: 3V724RG7
ECU HW: MM8GMKHW670
SW upgrade: 52052650
Calibration: MM8GMKHW670_3V724RG7_52052650

Related vehicles

Other vehicles built on the MM8GMK controller or the same engine — handy when a platform spans several models and makes.

Questions, answered.

Which tuning solutions are available for the FIAT 500X on the MM8GMK?

Stage 1, Stage 2, DPF Off, EGR Off, Swirl Flaps Off, Lambda / O2, MAF Off, TVA, NOx Off, AGS, Readiness, Start/Stop Off, Oil Pressure, Limp Mode Off. The exact set depends on the specific engine and software version.

Do you cover the MM8GMK ECU software on this model?

Yes — the FIAT 500X on the MM8GMK 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.