FIAT · MJ8F3 ECU · diesel

FIAT DOBLO II MJ8F3 tuning files

Tuning file coverage for the FIAT DOBLO II running the MJ8F3 ECU. The matched variants sit between 75 and 95 HP from the factory. It is a diesel platform, so the full diesel solution range is on the table. Each file is tied to the precise software on your car and checked before it goes out.

Available solutions

What we can run on the MJ8F3 for this diesel — the precise options narrow down by engine and software version.

Stage 1Stage 2DPF OffEGR OffSwirl Flaps OffLambda / O2MAF OffTVANOx OffAGSReadinessStart/Stop OffOil PressureLimp Mode Off

Engine variants & ECU software

17 distinct variants for the FIAT DOBLO II on the MJ8F3 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU
Catalog engine
1300 MJET 95HP
Generation
2015-
Matched gains engine
1.3 Multijet (Euro 6) 95
Controller brand
MAGNETI MARELLI
ECU
MJ8F3
Stock power
95 HP
Stage 1 power
115 HP
Power increase
+20 HP (+21%)
Stock torque
200 Nm
Stage 1 torque
250 Nm
Torque increase
+50 Nm (+25%)
ECU HW
MJ8F3HW1FP
SW upgrade
1941D320

Variant 2

ECU
Catalog engine
1300 MJET 95HP
Generation
2015-
Matched gains engine
1.3 Multijet (Euro 6) 95
Controller brand
MAGNETI MARELLI
ECU
MJ8F3
Stock power
95 HP
Stage 1 power
115 HP
Power increase
+20 HP (+21%)
Stock torque
200 Nm
Stage 1 torque
250 Nm
Torque increase
+50 Nm (+25%)
ECU SW
304BD412
ECU HW
MJ8F3HW2FP
SW upgrade
304BD412
Calibration
304BD412

Variant 3

ECU
Catalog engine
1300 MJET 95HP
Generation
2015-
Matched gains engine
1.3 Multijet (Euro 6) 95
Controller brand
MAGNETI MARELLI
ECU
MJ8F3
Stock power
95 HP
Stage 1 power
115 HP
Power increase
+20 HP (+21%)
Stock torque
200 Nm
Stage 1 torque
250 Nm
Torque increase
+50 Nm (+25%)
ECU SW
304BDA12
ECU HW
MJ8F3HW2FP
SW upgrade
304BDA12
Calibration
304BDA12

Variant 4

ECU
Catalog engine
1300 MJET 95HP
Engine code
199 B1.000
Generation
2015-
Matched gains engine
1.3 Multijet (Euro 6) 95
Controller brand
MAGNETI MARELLI
ECU
MJ8F3
Stock power
95 HP
Stage 1 power
115 HP
Power increase
+20 HP (+21%)
Stock torque
200 Nm
Stage 1 torque
250 Nm
Torque increase
+50 Nm (+25%)
ECU SW
3043D404
ECU HW
MJ8F3HW2FP
SW upgrade
3043D404
Calibration
3043D404

Variant 5

ECU
Catalog engine
1300 MJET 95HP
Generation
2015-
Matched gains engine
1.3 Multijet (Euro 6) 95
Controller brand
MAGNETI MARELLI
ECU
MJ8F3
Stock power
95 HP
Stage 1 power
115 HP
Power increase
+20 HP (+21%)
Stock torque
200 Nm
Stage 1 torque
250 Nm
Torque increase
+50 Nm (+25%)
ECU HW
MJ8F3HW2FP
SW upgrade
3044D405

Variant 6

ECU
Catalog engine
1300 MJET 95HP
Generation
2015-
Matched gains engine
1.3 Multijet (Euro 6) 95
Controller brand
MAGNETI MARELLI
ECU
MJ8F3
Stock power
95 HP
Stage 1 power
115 HP
Power increase
+20 HP (+21%)
Stock torque
200 Nm
Stage 1 torque
250 Nm
Torque increase
+50 Nm (+25%)
ECU SW
3044DA05
ECU HW
MJ8F3HW2FP
SW upgrade
3044DA05
Calibration
3044DA05

Variant 7

ECU
Catalog engine
1300 MJET 95HP
Generation
2015-
Matched gains engine
1.3 Multijet (Euro 6) 95
Controller brand
MAGNETI MARELLI
ECU
MJ8F3
Stock power
95 HP
Stage 1 power
115 HP
Power increase
+20 HP (+21%)
Stock torque
200 Nm
Stage 1 torque
250 Nm
Torque increase
+50 Nm (+25%)
ECU HW
MJ8F3HW10P
SW upgrade
1941F720

Variant 8

ECU
Catalog engine
1300 MJET 95HP
Generation
2015-
Matched gains engine
1.3 Multijet (Euro 6) 95
Controller brand
MAGNETI MARELLI
ECU
MJ8F3
Stock power
95 HP
Stage 1 power
115 HP
Power increase
+20 HP (+21%)
Stock torque
200 Nm
Stage 1 torque
250 Nm
Torque increase
+50 Nm (+25%)
ECU SW
3044D505
ECU HW
MJ8F3HW2FP
SW upgrade
3044D505
Calibration
3044D505

Variant 9

ECU
Catalog engine
1300 MJET 95HP
Generation
2015-
Matched gains engine
1.3 Multijet (Euro 6) 95
Controller brand
MAGNETI MARELLI
ECU
MJ8F3
Stock power
95 HP
Stage 1 power
115 HP
Power increase
+20 HP (+21%)
Stock torque
200 Nm
Stage 1 torque
250 Nm
Torque increase
+50 Nm (+25%)
ECU SW
3043D704
ECU HW
MJ8F3HW2FP
SW upgrade
3043D704
Calibration
3043D704

Variant 10

ECU
Catalog engine
1300 MJET 95HP
Generation
2015-
Matched gains engine
1.3 Multijet (Euro 6) 95
Controller brand
MAGNETI MARELLI
ECU
MJ8F3
Stock power
95 HP
Stage 1 power
115 HP
Power increase
+20 HP (+21%)
Stock torque
200 Nm
Stage 1 torque
250 Nm
Torque increase
+50 Nm (+25%)
ECU HW
MJ8F3HW2FP
SW upgrade
304BD512
Calibration
304BD512

Variant 11

ECU
Catalog engine
1300 MJET 95HP
Engine code
199 B1.000
Generation
2015-
Matched gains engine
1.3 Multijet (Euro 6) 95
Controller brand
MAGNETI MARELLI
ECU
MJ8F3
Stock power
95 HP
Stage 1 power
115 HP
Power increase
+20 HP (+21%)
Stock torque
200 Nm
Stage 1 torque
250 Nm
Torque increase
+50 Nm (+25%)
ECU SW
3043D504
ECU HW
MJ8F3HW2FP
SW upgrade
3043D504
Calibration
3043D504

Variant 12

ECU
Catalog engine
1300 90HP
Controller brand
MAGNETI MARELLI
ECU
MJ8F3
Stock power
90 HP
ECU HW
MJ8F3HW2FP
SW upgrade
2841D448

Variant 13

ECU
Catalog engine
1300 90HP
Controller brand
MAGNETI MARELLI
ECU
MJ8F3
Stock power
90 HP
ECU SW
2841D548
ECU HW
MJ8F3HW2FP
SW upgrade
2841D548
Calibration
2841D548

Variant 14

ECU
Catalog engine
1300 90HP
Controller brand
MAGNETI MARELLI
ECU
MJ8F3
Stock power
90 HP
ECU SW
2841D750
ECU HW
MJ8F3HW2FP
SW upgrade
2841D750
Calibration
2841D750

Variant 15

ECU
Catalog engine
1300 75HP
Generation
-2015
Matched gains engine
1.3 JTD 75
Controller brand
MAGNETI MARELLI
ECU
MJ8F3
Stock power
75 HP
Stage 1 power
95 HP
Power increase
+20 HP (+27%)
Stock torque
190 Nm
Stage 1 torque
240 Nm
Torque increase
+50 Nm (+26%)
ECU SW
2442D130
ECU HW
MJ8F3HW1FP
SW upgrade
2442D130
Calibration
2442D130

Variant 16

ECU
Catalog engine
1300 MJET 75HP
Generation
-2015
Matched gains engine
1.3 JTD 75
Controller brand
MAGNETI MARELLI
ECU
MJ8F3
Stock power
75 HP
Stage 1 power
95 HP
Power increase
+20 HP (+27%)
Stock torque
190 Nm
Stage 1 torque
240 Nm
Torque increase
+50 Nm (+26%)
ECU HW
MJ8F3HW10L
SW upgrade
2443X144

Variant 17

ECU
Catalog engine
1300 MJET 75HP
Generation
-2015
Matched gains engine
1.3 JTD 75
Controller brand
MAGNETI MARELLI
ECU
MJ8F3
Stock power
75 HP
Stage 1 power
95 HP
Power increase
+20 HP (+27%)
Stock torque
190 Nm
Stage 1 torque
240 Nm
Torque increase
+50 Nm (+26%)
ECU HW
MJ8F3HW1FP
SW upgrade
2442D330

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 DOBLO II 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 DOBLO II 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.

FIAT DOBLO II MJ8F3 ECU Tuning Files | TuningBay