PIAGGIO · IAW MIU4 ECU · petrol

PIAGGIO VESPA IAW MIU4 tuning files

Tuning file coverage for the PIAGGIO VESPA running the IAW MIU4 ECU. The matched variants sit between 12 and 35 HP from the factory. 28 distinct variants are catalogued here. It is a petrol platform, tuned for response and clean power delivery. Every file is matched to the exact calibration on your vehicle and signed off by an operator.

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

Available solutions

Applicable work for the IAW MIU4 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

28 distinct variants for the PIAGGIO VESPA on the IAW MIU4 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 300 35HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 35 HP
SW upgrade: 5737GEAS
Calibration: 5737GEAS

Variant 2

ECU

Catalog engine: 300 35HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 35 HP
SW upgrade: 5735GAAL
Calibration: 5735GAAL

Variant 3

ECU

Catalog engine: 300 35HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 35 HP
SW upgrade: 5737GAAS
Calibration: 5737GAAS

Variant 4

ECU

Catalog engine: GTS 300 35HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 35 HP
SW upgrade: 5816IAAF
Calibration: 5816IAAF

Variant 5

ECU

Catalog engine: 278 24HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 24 HP
SW upgrade: 5816ICAF
Calibration: 5816ICAF

Variant 6

ECU

Catalog engine: 250 22HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 22 HP
SW upgrade: 5835MEAM
Calibration: 5835MEAM

Variant 7

ECU

Catalog engine: 250 22HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 22 HP
SW upgrade: 5835MCAP
Calibration: 5835MCAP

Variant 8

ECU

Catalog engine: 250 22HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 22 HP
SW upgrade: 5835MBAO
Calibration: 5835MBAO

Variant 9

ECU

Catalog engine: 278cc 22HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 22 HP
SW upgrade: 5816IAAC
Calibration: 5816IAAC

Variant 10

ECU

Catalog engine: 278cc 22HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 22 HP
SW upgrade: 5816ICAF
Calibration: 5816ICAF

Variant 11

ECU

Catalog engine: 278cc 22HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 22 HP
SW upgrade: 581CIFAO
Calibration: 581CIFAO

Variant 12

ECU

Catalog engine: 278cc 22HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 22 HP
SW upgrade: 5711-AN01
Calibration: 5711-AN01

Variant 13

ECU

Catalog engine: 278cc 22HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 22 HP
SW upgrade: 581AIMAL
Calibration: 581AIMAL

Variant 14

ECU

Catalog engine: GTS 310 22HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 22 HP
SW upgrade: 5835MBAQ
Calibration: 5835MBAQ

Variant 15

ECU

Catalog engine: 300 21HP
Generation: 2018-
Matched gains engine: 300 I.E (Eu4)
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 21 HP
Stage 1 power: 23 HP
Power increase: +2 HP (+10%)
Stock torque: 23 Nm
Stage 1 torque: 25 Nm
Torque increase: +2 Nm (+9%)
SW upgrade: 5737GDAR
Calibration: 5737GDAR

Variant 16

ECU

Catalog engine: 300 21HP
Generation: 2018-
Matched gains engine: 300 I.E (Eu4)
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 21 HP
Stage 1 power: 23 HP
Power increase: +2 HP (+10%)
Stock torque: 23 Nm
Stage 1 torque: 25 Nm
Torque increase: +2 Nm (+9%)

Variant 17

ECU

Catalog engine: 300 21HP
Generation: 2018-
Matched gains engine: 300 I.E (Eu4)
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 21 HP
Stage 1 power: 23 HP
Power increase: +2 HP (+10%)
Stock torque: 23 Nm
Stage 1 torque: 25 Nm
Torque increase: +2 Nm (+9%)
SW upgrade: 581AIGAL
Calibration: 581AIGAL

Variant 18

ECU

Catalog engine: 300 21HP
Generation: 2018-
Matched gains engine: 300 I.E (Eu4)
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 21 HP
Stage 1 power: 23 HP
Power increase: +2 HP (+10%)
Stock torque: 23 Nm
Stage 1 torque: 25 Nm
Torque increase: +2 Nm (+9%)
SW upgrade: 56BGEGAY
Calibration: 56BGEGAY

Variant 19

ECU

Catalog engine: 300 21HP
Generation: 2018-
Matched gains engine: 300 I.E (Eu4)
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 21 HP
Stage 1 power: 23 HP
Power increase: +2 HP (+10%)
Stock torque: 23 Nm
Stage 1 torque: 25 Nm
Torque increase: +2 Nm (+9%)
SW upgrade: 581AIEAL
Calibration: 581AIEAL

Variant 20

ECU

Catalog engine: 300 21HP
Generation: 2018-
Matched gains engine: 300 I.E (Eu4)
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 21 HP
Stage 1 power: 23 HP
Power increase: +2 HP (+10%)
Stock torque: 23 Nm
Stage 1 torque: 25 Nm
Torque increase: +2 Nm (+9%)
SW upgrade: 56BGEDAX
Calibration: 56BGEDAX

Variant 21

ECU

Catalog engine: 300 21HP
Generation: 2018-
Matched gains engine: 300 I.E (Eu4)
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 21 HP
Stage 1 power: 23 HP
Power increase: +2 HP (+10%)
Stock torque: 23 Nm
Stage 1 torque: 25 Nm
Torque increase: +2 Nm (+9%)
SW upgrade: 56ACEAAQ
Calibration: 56ACEAAQ

Variant 22

ECU

Catalog engine: 125 15HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 15 HP
SW upgrade: 5737HBAS
Calibration: 5737HBAS

Variant 23

ECU

Catalog engine: 125 15HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 15 HP
SW upgrade: 5737HAAS
Calibration: 5737HAAS

Variant 24

ECU

Catalog engine: 125 15HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 15 HP
SW upgrade: 573CLEAE
Calibration: 573CLEAE

Variant 25

ECU

Catalog engine: 125 15HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 15 HP
SW upgrade: 573CHIAZ
Calibration: 573CHIAZ

Variant 26

ECU

Catalog engine: 125 15HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 15 HP
SW upgrade: 5835MBAM
Calibration: 5835MBAM

Variant 27

ECU

Catalog engine: 125 13HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 13 HP
SW upgrade: 5833KCAL
Calibration: 5833KCAL

Variant 28

ECU

Catalog engine: 150 12HP
Controller brand: MAGNETI MARELLI
ECU: IAW MIU4
Stock power: 12 HP
SW upgrade: 581CIEAO
Calibration: 581CIEAO

Related vehicles

Other vehicles built on the IAW MIU4 controller or the same engine — handy when a platform spans several models and makes.

Questions, answered.

Which tuning solutions are available for the PIAGGIO VESPA on the IAW MIU4?

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 IAW MIU4 ECU software on this model?

Yes — the PIAGGIO VESPA on the IAW MIU4 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.