MAZDA · SH725X ECU

MAZDA 6 SH725X tuning files

Tuning file coverage for the MAZDA 6 running the SH725X ECU. Across the matched variants stock power runs from 150 to 192 HP. For this platform the dependable path begins with Stage 1 and Stage 2. Your file is built against the exact ECU software on the car, then operator-verified.

Upload your file →All 6 coverage

Available solutions

What we can run on the SH725X for this vehicle — the precise options narrow down by engine and software version.

Stage 1 Stage 2 Swirl Flaps OffLambda / O2OPF/GPF Off

Engine variants & ECU software

25 distinct variants for the MAZDA 6 on the SH725X ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 2500 192HP
Generation: 2013-2018
Matched gains engine: 2.5 Skyactiv-G 192
Controller brand: DENSO
ECU: SH725X
Stock power: 192 HP
Stage 1 power: 210 HP
Power increase: +18 HP (+9%)
Stock torque: 256 Nm
Stage 1 torque: 275 Nm
Torque increase: +19 Nm (+7%)
ECU SW: PY1R-18881-E
SW upgrade: PY1R-188K2-E
Calibration: PY1R-18881-E_PY1R-188K2-E

Variant 2

ECU

Catalog engine: 2500 192HP
Generation: 2013-2018
Matched gains engine: 2.5 Skyactiv-G 192
Controller brand: DENSO
ECU: SH725X
Stock power: 192 HP
Stage 1 power: 210 HP
Power increase: +18 HP (+9%)
Stock torque: 256 Nm
Stage 1 torque: 275 Nm
Torque increase: +19 Nm (+7%)
ECU SW: PSS4-18881-C
SW upgrade: PSS4-188K2-C
Calibration: PSS4-18881-C_PSS4-188K2-C

Variant 3

ECU

Catalog engine: 2200 175HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 175
Controller brand: DENSO
ECU: SH725X
Stock power: 175 HP
Stage 1 power: 210 HP
Power increase: +35 HP (+20%)
Stock torque: 420 Nm
Stage 1 torque: 480 Nm
Torque increase: +60 Nm (+14%)
ECU SW: SH6P-18881-E
SW upgrade: SH6P-188K2-E
Calibration: SH6P-18881-E_SH6P-188K2-E

Variant 4

ECU

Catalog engine: 2200 175HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 175
Controller brand: DENSO
ECU: SH725X
Stock power: 175 HP
Stage 1 power: 210 HP
Power increase: +35 HP (+20%)
Stock torque: 420 Nm
Stage 1 torque: 480 Nm
Torque increase: +60 Nm (+14%)
ECU SW: SH7J-18881-G
SW upgrade: SH7J-188K2-G
Calibration: SH7J-18881-G_SH7J-188K2-G

Variant 5

ECU

Catalog engine: 2200 175HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 175
Controller brand: DENSO
ECU: SH725X
Stock power: 175 HP
Stage 1 power: 210 HP
Power increase: +35 HP (+20%)
Stock torque: 420 Nm
Stage 1 torque: 480 Nm
Torque increase: +60 Nm (+14%)
ECU SW: SHYT-18881-
SW upgrade: SHYT-188K2-
Calibration: SHYT-18881-_SHYT-188K2-

Variant 6

ECU

Catalog engine: 2200 175HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 175
Controller brand: DENSO
ECU: SH725X
Stock power: 175 HP
Stage 1 power: 210 HP
Power increase: +35 HP (+20%)
Stock torque: 420 Nm
Stage 1 torque: 480 Nm
Torque increase: +60 Nm (+14%)
ECU SW: SH7H-18881-G
SW upgrade: SH7H-188K2-G
Calibration: SH7H-18881-G_SH7H-188K2-G

Variant 7

ECU

Catalog engine: 2200 175HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 175
Controller brand: DENSO
ECU: SH725X
Stock power: 175 HP
Stage 1 power: 210 HP
Power increase: +35 HP (+20%)
Stock torque: 420 Nm
Stage 1 torque: 480 Nm
Torque increase: +60 Nm (+14%)
ECU SW: SH12-18881-N
SW upgrade: SH12-188K2-N
Calibration: SH12-18881-N_SH12-188K2-N

Variant 8

ECU

Catalog engine: 2200 175HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 175
Controller brand: DENSO
ECU: SH725X
Stock power: 175 HP
Stage 1 power: 210 HP
Power increase: +35 HP (+20%)
Stock torque: 420 Nm
Stage 1 torque: 480 Nm
Torque increase: +60 Nm (+14%)
ECU SW: SH4J-18881-H
SW upgrade: SH4J-188K2-H
Calibration: SH4J-18881-H_SH4J-188K2-H

Variant 9

ECU

Catalog engine: 2000 160HP
Controller brand: DENSO
ECU: SH725X
Stock power: 160 HP
ECU SW: PYKP-18881-C
SW upgrade: PYKP-188K2-C
Calibration: PYKP-18881-C_PYKP-188K2-C

Variant 10

ECU

Catalog engine: 2000 155HP
Controller brand: DENSO
ECU: SH725X
Stock power: 155 HP
ECU SW: PY7L-18881-D
SW upgrade: PY7L-188K2-D
Calibration: PY7L-18881-D_PY7L-188K2-D

Variant 11

ECU

Catalog engine: 2000 155HP
Controller brand: DENSO
ECU: SH725X
Stock power: 155 HP
ECU SW: PY7K-18881-C
SW upgrade: PY7K-188K2-C
Calibration: PY7K-18881-C_PY7K-188K2-C

Variant 12

ECU

Catalog engine: 2000 150HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 150
Controller brand: DENSO
ECU: SH725X
Stock power: 150 HP
Stage 1 power: 210 HP
Power increase: +60 HP (+40%)
Stock torque: 380 Nm
Stage 1 torque: 480 Nm
Torque increase: +100 Nm (+26%)
ECU SW: PECD-18881-A
SW upgrade: PECD-188K2-A
Calibration: PECD-18881-A_PECD-188K2-A

Variant 13

ECU

Catalog engine: 2200 150HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 150
Controller brand: DENSO
ECU: SH725X
Stock power: 150 HP
Stage 1 power: 210 HP
Power increase: +60 HP (+40%)
Stock torque: 380 Nm
Stage 1 torque: 480 Nm
Torque increase: +100 Nm (+26%)
ECU SW: SHYM-18881-A
SW upgrade: SHYM-188K2-A
Calibration: SHYM-18881-A_SHYM-188K2-A

Variant 14

ECU

Catalog engine: 2200 150HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 150
Controller brand: DENSO
ECU: SH725X
Stock power: 150 HP
Stage 1 power: 210 HP
Power increase: +60 HP (+40%)
Stock torque: 380 Nm
Stage 1 torque: 480 Nm
Torque increase: +100 Nm (+26%)
ECU SW: SH08-18881-W
SW upgrade: SH08-188K2-W
Calibration: SH08-18881-W_SH08-188K2-W

Variant 15

ECU

Catalog engine: 2200 150HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 150
Controller brand: DENSO
ECU: SH725X
Stock power: 150 HP
Stage 1 power: 210 HP
Power increase: +60 HP (+40%)
Stock torque: 380 Nm
Stage 1 torque: 480 Nm
Torque increase: +100 Nm (+26%)
ECU SW: SHKH-18881-F
SW upgrade: SHKH-188K2-F
Calibration: SHKH-18881-F_SHKH-188K2-F

Variant 16

ECU

Catalog engine: 2200 150HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 150
Controller brand: DENSO
ECU: SH725X
Stock power: 150 HP
Stage 1 power: 210 HP
Power increase: +60 HP (+40%)
Stock torque: 380 Nm
Stage 1 torque: 480 Nm
Torque increase: +100 Nm (+26%)
ECU SW: SHJC-18881-D
SW upgrade: SHJC-188K2-D
Calibration: SHJC-18881-D_SHJC-188K2-D

Variant 17

ECU

Catalog engine: 2200 150HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 150
Controller brand: DENSO
ECU: SH725X
Stock power: 150 HP
Stage 1 power: 210 HP
Power increase: +60 HP (+40%)
Stock torque: 380 Nm
Stage 1 torque: 480 Nm
Torque increase: +100 Nm (+26%)
ECU SW: SH06-18881-P
SW upgrade: SHYJ-188K2-B
Calibration: SH06-18881-P_SHYJ-188K2-B

Variant 18

ECU

Catalog engine: 2200 150HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 150
Controller brand: DENSO
ECU: SH725X
Stock power: 150 HP
Stage 1 power: 210 HP
Power increase: +60 HP (+40%)
Stock torque: 380 Nm
Stage 1 torque: 480 Nm
Torque increase: +100 Nm (+26%)
ECU SW: SH3A-18881-W
SW upgrade: SH3A-188K2-W
Calibration: SH3A-18881-W_SH3A-188K2-W

Variant 19

ECU

Catalog engine: 2200 150HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 150
Controller brand: DENSO
ECU: SH725X
Stock power: 150 HP
Stage 1 power: 210 HP
Power increase: +60 HP (+40%)
Stock torque: 380 Nm
Stage 1 torque: 480 Nm
Torque increase: +100 Nm (+26%)
ECU SW: SH5S-18881-J
SW upgrade: SH5S-188K2-J
Calibration: SH5S-18881-J_SH5S-188K2-J

Variant 20

ECU

Catalog engine: 2200 150HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 150
Controller brand: DENSO
ECU: SH725X
Stock power: 150 HP
Stage 1 power: 210 HP
Power increase: +60 HP (+40%)
Stock torque: 380 Nm
Stage 1 torque: 480 Nm
Torque increase: +100 Nm (+26%)
ECU SW: SH3A-18881-N
SW upgrade: SH3A-188K2-N
Calibration: SH3A-18881-N_SH3A-188K2-N

Variant 21

ECU

Catalog engine: 2200 150HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 150
Controller brand: DENSO
ECU: SH725X
Stock power: 150 HP
Stage 1 power: 210 HP
Power increase: +60 HP (+40%)
Stock torque: 380 Nm
Stage 1 torque: 480 Nm
Torque increase: +100 Nm (+26%)
ECU SW: SH5G-18881-G
SW upgrade: SH5G-188K2-G
Calibration: SH5G-18881-G_SH5G-188K2-G

Variant 22

ECU

Catalog engine: 2200 150HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 150
Controller brand: DENSO
ECU: SH725X
Stock power: 150 HP
Stage 1 power: 210 HP
Power increase: +60 HP (+40%)
Stock torque: 380 Nm
Stage 1 torque: 480 Nm
Torque increase: +100 Nm (+26%)
ECU SW: SH5L-18881-H
SW upgrade: SH5L-188K2-H
Calibration: SH5L-18881-H_SH5L-188K2-H

Variant 23

ECU

Catalog engine: 2200 150HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 150
Controller brand: DENSO
ECU: SH725X
Stock power: 150 HP
Stage 1 power: 210 HP
Power increase: +60 HP (+40%)
Stock torque: 380 Nm
Stage 1 torque: 480 Nm
Torque increase: +100 Nm (+26%)
ECU SW: SH5K-18881-J
SW upgrade: SH5K-188K2-J
Calibration: SH5K-18881-J_SH5K-188K2-J

Variant 24

ECU

Catalog engine: 2200 150HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 150
Controller brand: DENSO
ECU: SH725X
Stock power: 150 HP
Stage 1 power: 210 HP
Power increase: +60 HP (+40%)
Stock torque: 380 Nm
Stage 1 torque: 480 Nm
Torque increase: +100 Nm (+26%)
ECU SW: SH9S-18881-H
SW upgrade: SH9S-188K2-H
Calibration: SH9S-18881-H_SH9S-188K2-H

Variant 25

ECU

Catalog engine: 2200 Skyactiv-D 150HP
Generation: 2013-2018
Matched gains engine: 2.2 Skyactiv-D 150
Controller brand: DENSO
ECU: SH725X
Stock power: 150 HP
Stage 1 power: 210 HP
Power increase: +60 HP (+40%)
Stock torque: 380 Nm
Stage 1 torque: 480 Nm
Torque increase: +100 Nm (+26%)
ECU SW: SH1R-18881-P
SW upgrade: SH1R-188K2-P
Calibration: SH1R-18881-P_SH1R-188K2-P

Related vehicles

Other vehicles built on the SH725X controller or the same engine — handy when a platform spans several models and makes.

Questions, answered.

Which tuning solutions are available for the MAZDA 6 on the SH725X?

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 SH725X ECU software on this model?

Yes — the MAZDA 6 on the SH725X 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.