FIAT · MM8GSW ECU

FIAT 500 MM8GSW tuning files

Tuning file coverage for the FIAT 500 running the MM8GSW ECU. Stock output across the matched variants spans 80–105 HP. There are 21 distinct variants on file for this combination. We start conservative here — Stage 1 and Stage 2 are the dependable baseline. Each file is tied to the precise software on your car and checked before it goes out.

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

Available solutions

Applicable work for the MM8GSW on this vehicle. The available set firms up once the exact engine and software are known.

Stage 1 Stage 2

Engine variants & ECU software

21 distinct variants for the FIAT 500 on the MM8GSW ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 900 105HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 105 HP
ECU SW: 3D3E5FR6
ECU HW: MM8GSWHW608
SW upgrade: 51987324
Calibration: MM8GSWHW608_3D3E5FR6_51987324

Variant 2

ECU

Catalog engine: 900 105HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 105 HP
ECU SW: 3D384BM7
ECU HW: MM8GSWHW601
SW upgrade: 51949019
Calibration: MM8GSWHW601_3D384BM7_51949019

Variant 3

ECU

Catalog engine: 900 105HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 105 HP
ECU SW: 3D3E5FS5
ECU HW: MM8GSWHW607
SW upgrade: 51966060
Calibration: MM8GSWHW607_3D3E5FS5_51966060

Variant 4

ECU

Catalog engine: 900 85HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 85 HP
ECU SW: 3C202HL0
ECU HW: MM8GSWHW611
SW upgrade: 51969926
Calibration: MM8GSWHW611_3C202HL0_51969926

Variant 5

ECU

Catalog engine: 900 85HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 85 HP
ECU SW: 3C412HL5
ECU HW: MM8GSWHW611
SW upgrade: 51994080
Calibration: MM8GSWHW611_3C412HL5_51994080

Variant 6

ECU

Catalog engine: 900 85HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 85 HP
ECU SW: 3C412HM4
ECU HW: MM8GSWHW612
SW upgrade: 52011159
Calibration: MM8GSWHW612_3C412HM4_52011159

Variant 7

ECU

Catalog engine: 900 85HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 85 HP
ECU SW: 3D433FR4
ECU HW: MM8GSWHW608
SW upgrade: 52062487
Calibration: MM8GSWHW608_3D433FR4_52062487

Variant 8

ECU

Catalog engine: 900 85HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 85 HP
ECU SW: 3D433ES4
ECU HW: MM8GSWHW608
SW upgrade: 52062485
Calibration: MM8GSWHW608_3D433ES4_52062485

Variant 9

ECU

Catalog engine: 900 85HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 85 HP
ECU SW: 3D620WM9
ECU HW: MM8GSWHW608
SW upgrade: 52131483
Calibration: MM8GSWHW608_3D620WM9_52131483

Variant 10

ECU

Catalog engine: 900 85HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 85 HP
ECU SW: 3C412HL3
ECU HW: MM8GSWHW612
SW upgrade: 52018630
Calibration: MM8GSWHW612_3C412HL3_52018630

Variant 11

ECU

Catalog engine: 900 85HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 85 HP
ECU SW: 3D620ESS
ECU HW: MM8GSWHW608
SW upgrade: 52098854
Calibration: MM8GSWHW608_3D620ESS_52098854

Variant 12

ECU

Catalog engine: 900 85HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 85 HP
ECU SW: 3D3D1FA6
ECU HW: MM8GSWHW607
SW upgrade: 51958131
Calibration: MM8GSWHW607_3D3D1FA6_51958131

Variant 13

ECU

Catalog engine: 900 85HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 85 HP
ECU SW: 3D620HM8
ECU HW: MM8GSWHW612
SW upgrade: 52121786
Calibration: MM8GSWHW612_3D620HM8_52121786

Variant 14

ECU

Catalog engine: 900 TURBO 85HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 85 HP
ECU SW: 3C301HL0
ECU HW: MM8GSWHW611
SW upgrade: 51981627
Calibration: MM8GSWHW611_3C301HL0_51981627

Variant 15

ECU

Catalog engine: 900 80HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 80 HP
ECU SW: 3D432WM0
ECU HW: MM8GSWHW608
SW upgrade: 52062463
Calibration: MM8GSWHW608_3D432WM0_52062463

Variant 16

ECU

Catalog engine: 900 80HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 80 HP
ECU SW: 3D432WM6
ECU HW: MM8GSWHW608
SW upgrade: 52026724
Calibration: MM8GSWHW608_3D432WM6_52026724

Variant 17

ECU

Catalog engine: 900 80HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 80 HP
ECU SW: 3D432ES4
ECU HW: MM8GSWHW608
SW upgrade: 52003445
Calibration: MM8GSWHW608_3D432ES4_52003445

Variant 18

ECU

Catalog engine: 900 80HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 80 HP
ECU SW: 3D432EM5
ECU HW: MM8GSWHW608
SW upgrade: 52018632
Calibration: MM8GSWHW608_3D432EM5_52018632

Variant 19

ECU

Catalog engine: 900 80HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 80 HP
ECU SW: 3D432EM6
ECU HW: MM8GSWHW608
SW upgrade: 52011131
Calibration: MM8GSWHW608_3D432EM6_52011131

Variant 20

ECU

Catalog engine: 900 80HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 80 HP
ECU SW: 3D432KM0
ECU HW: MM8GSWHW608
SW upgrade: 52045274
Calibration: MM8GSWHW608_3D432KM0_52045274

Variant 21

ECU

Catalog engine: 900 80HP
Controller brand: MAGNETI MARELLI
ECU: MM8GSW
Stock power: 80 HP
ECU SW: 3D660XMA
ECU HW: MM8GSWHW608
SW upgrade: 46357459
Calibration: MM8GSWHW608_3D660XMA_46357459

Related vehicles

Other vehicles built on the MM8GSW 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 MM8GSW?

Stage 1, Stage 2. The exact set depends on the specific engine and software version.

Do you cover the MM8GSW ECU software on this model?

Yes — the FIAT 500 on the MM8GSW 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.