FIAT · MJ8F3 ECU · diesel

FIAT 500 MJ8F3 tuning files

The FIAT 500 on the MJ8F3, mapped from stock file to finished result. Stock output across the matched variants spans 85–95 HP. There are 42 distinct variants on file for this combination. On this diesel, expect the complete diesel toolset — from Stage work to the common delete requests. Every file is matched to the exact calibration on your vehicle and signed off by an operator.

Upload your file →All 500 coverage

Available solutions

What we can run on the MJ8F3 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

42 distinct variants for the FIAT 500 on the MJ8F3 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 1300 95HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU HW: MJ8F3HW10C
SW upgrade: 2345C148

Variant 2

ECU

Catalog engine: 1300 95HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU HW: MJ8F3HW10C
SW upgrade: 2345C130
Calibration: 2345C130

Variant 3

ECU

Catalog engine: 1300 95HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU SW: 234AC110
ECU HW: MJ8F3HW10C
SW upgrade: 234AC110
Calibration: 234AC110

Variant 4

ECU

Catalog engine: 1300 95HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU HW: MJ8F3HW1FL
SW upgrade: 294AC310

Variant 5

ECU

Catalog engine: 1300 95HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU HW: MJ8F3HW10P
SW upgrade: 2345G230

Variant 6

ECU

Catalog engine: 1300 MJET 95HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU HW: MJ8F3HW1FL
SW upgrade: 2940C345

Variant 7

ECU

Catalog engine: 1300 MJET 95HP
Engine code: 169 A1.000
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU SW: 2940C348
ECU HW: MJ8F3HW1FL
SW upgrade: 2940C348
Calibration: 2940C348

Variant 8

ECU

Catalog engine: 1300 MJET 95HP
Engine code: 199 B1.000
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU SW: 3044C304
ECU HW: MJ8F3HW1FL
SW upgrade: 3044C304
Calibration: 3044C304

Variant 9

ECU

Catalog engine: 1300 MJET 95HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU HW: MJ8F3HW10L
SW upgrade: 3044X105

Variant 10

ECU

Catalog engine: 1300 MJET 95HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU HW: MJ8F3HW2FP
SW upgrade: 3044DD05
Calibration: 3044DD05

Variant 11

ECU

Catalog engine: 1300 MJET 95HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU HW: MJ8F3HW20P
SW upgrade: 3044QH05
Calibration: 3044QH05

Variant 12

ECU

Catalog engine: 1300 MJET 95HP
Engine code: 169 A1.000
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU SW: 2940Y248
ECU HW: MJ8F3HW1FL
SW upgrade: 2940Y248
Calibration: 2940Y248

Variant 13

ECU

Catalog engine: 1300 MJET 95HP
Engine code: 199 B1.000
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU SW: 3044QI05
ECU HW: MJ8F3HW20P
SW upgrade: 3044QI05
Calibration: 3044QI05

Variant 14

ECU

Catalog engine: 1300 MJET 95HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU SW: 2345C130
ECU HW: MJ8F3HW10C
SW upgrade: 2345C130
Calibration: 2345C130

Variant 15

ECU

Catalog engine: 1300 MJET 95HP
Engine code: 199 B1.000
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU SW: 3044DB05
ECU HW: MJ8F3HW2FP
SW upgrade: 3044DB05
Calibration: 3044DB05

Variant 16

ECU

Catalog engine: 1300 MJET 95HP
Engine code: 199 B1.000
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU SW: 3044D805
ECU HW: MJ8F3HW1FL
SW upgrade: 3044D805
Calibration: 3044D805

Variant 17

ECU

Catalog engine: 1300 MJET 95HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU HW: MJ8F3HW20P
SW upgrade: 3044QB05
Calibration: 3044QB05

Variant 18

ECU

Catalog engine: 1300 MJET 95HP
Engine code: 199 B1.000
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU SW: 3044D705
ECU HW: MJ8F3HW2FP
SW upgrade: 3044D705
Calibration: 3044D705

Variant 19

ECU

Catalog engine: 1300 MJET 95HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU HW: MJ8F3HW2FP
SW upgrade: 3044D405

Variant 20

ECU

Catalog engine: 1300 MJET 95HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 95 HP
ECU HW: MJ8F3HW20P
SW upgrade: 3044QC05

Variant 21

ECU

Catalog engine: 1300 85HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU HW: MJ8F3HW1FL
SW upgrade: 304AGH10

Variant 22

ECU

Catalog engine: 1300 85HP
Engine code: 199 B4.000
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU SW: 304AC310
ECU HW: MJ8F3HW1FL
SW upgrade: 304AC310
Calibration: 304AC310

Variant 23

ECU

Catalog engine: 1300 85HP
Engine code: 199 B4.000
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU SW: 304AX310
ECU HW: MJ8F3HW10L
SW upgrade: 304AX310
Calibration: 304AX310

Variant 24

ECU

Catalog engine: 1300 85HP
Engine code: 199 B4.000
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU SW: 304AX110
ECU HW: MJ8F3HW10L
SW upgrade: 304AX110
Calibration: 304AX110

Variant 25

ECU

Catalog engine: 1300 85HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU SW: 304AD811
ECU HW: MJ8F3HW1FL
SW upgrade: 304AD811
Calibration: 304AD811

Variant 26

ECU

Catalog engine: 1300 85HP
Engine code: 199 B4.000
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU SW: 304AD810
ECU HW: MJ8F3HW1FL
SW upgrade: 304AD810
Calibration: 304AD810

Variant 27

ECU

Catalog engine: 1300 85HP
Engine code: 199 B4.000
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU SW: 304AQ610
ECU HW: MJ8F3HW10L
SW upgrade: 304AQ610
Calibration: 304AQ610

Variant 28

ECU

Catalog engine: 1300 MJET 85HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU HW: MJ8F3HW10L
SW upgrade: 284AX310

Variant 29

ECU

Catalog engine: 1300 MJET 85HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU HW: MJ8F3HW1FL
SW upgrade: 284AX610

Variant 30

ECU

Catalog engine: 1300 MJET 85HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU SW: 2841X148
ECU HW: MJ8F3HW10L
SW upgrade: 2841X148
Calibration: 2841X148

Variant 31

ECU

Catalog engine: 1300 MJET 85HP
Engine code: 199 B4.000
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU SW: 2841X344
ECU HW: MJ8F3HW10L
SW upgrade: 2841X344
Calibration: 2841X344

Variant 32

ECU

Catalog engine: 1300 MJET 85HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU HW: MJ8F3HW10L
SW upgrade: 284AX110
Calibration: 284AX110

Variant 33

ECU

Catalog engine: 1300 MJET 85HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU HW: MJ8F3HW10P
SW upgrade: 2443P232
Calibration: 2443P232

Variant 34

ECU

Catalog engine: 1300 MJET 85HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU SW: 2443X131
ECU HW: MJ8F3HW10L
SW upgrade: 2443X131
Calibration: 2443X131

Variant 35

ECU

Catalog engine: 1300 MJET 85HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU SW: 2841X140
ECU HW: MJ8F3HW10L
SW upgrade: 2841X140
Calibration: 2841X140

Variant 36

ECU

Catalog engine: 1300 MJET 85HP
Engine code: 199 B4.000
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU SW: 2841X346
ECU HW: MJ8F3HW10L
SW upgrade: 2841X346
Calibration: 2841X346

Variant 37

ECU

Catalog engine: 1300 MJET 85HP
Engine code: 199 B4.000
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU SW: 2841X345
ECU HW: MJ8F3HW10L
SW upgrade: 2841X345
Calibration: 2841X345

Variant 38

ECU

Catalog engine: 1300 MJET 85HP
Engine code: 199 B4.000
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU SW: 3046X306
ECU HW: MJ8F3HW10L
SW upgrade: 3046X306
Calibration: 3046X306

Variant 39

ECU

Catalog engine: 1300 MJET 85HP
Engine code: 199 B4.000
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU SW: 3046X606
ECU HW: MJ8F3HW1FL
SW upgrade: 3046X606
Calibration: 3046X606

Variant 40

ECU

Catalog engine: 1300 MJET 85HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU SW: 2443X142
ECU HW: MJ8F3HW10L
SW upgrade: 2443X142
Calibration: 2443X142

Variant 41

ECU

Catalog engine: 1300 MJET 85HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU SW: 2443X144
ECU HW: MJ8F3HW10L
SW upgrade: 2443X144
Calibration: 2443X144

Variant 42

ECU

Catalog engine: 1300 MJET 85HP
Controller brand: MAGNETI MARELLI
ECU: MJ8F3
Stock power: 85 HP
ECU SW: 2841X340
ECU HW: MJ8F3HW10L
SW upgrade: 2841X340
Calibration: 2841X340

Related vehicles

Other vehicles built on the MJ8F3 controller or the same engine — handy when a platform spans several models and makes.

Questions, answered.

Which tuning solutions are available for the FIAT 500 on the MJ8F3?

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 MJ8F3 ECU software on this model?

Yes — the FIAT 500 on the MJ8F3 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.