INFINITI · SH705823N ECU

INFINITI FX SH705823N tuning files

Here is what the catalog holds for the INFINITI FX on the SH705823N. Stock output across the matched variants spans 230–280 HP. There are 3 distinct variants on file for this combination. Stage 1 and Stage 2 are the safe starting points for this platform. Your file is built against the exact ECU software on the car, then operator-verified.

Upload your file →All FX coverage

Available solutions

Solutions that apply to the SH705823N on this vehicle platform. The exact set depends on the specific engine and software version.

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

Engine variants & ECU software

3 distinct variants for the INFINITI FX on the SH705823N ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 3500 V6 280HP
Controller brand: HITACHI
ECU: SH705823N
Stock power: 280 HP

Variant 2

ECU

Catalog engine: 3500 230HP
Controller brand: HITACHI
ECU: SH705823N
Stock power: 230 HP
ECU HW: 23710-8Y72A

Variant 3

ECU

Catalog engine: 3500 230HP
Controller brand: HITACHI
ECU: SH705823N
Stock power: 230 HP

Related vehicles

Other vehicles built on the SH705823N controller or the same engine — handy when a platform spans several models and makes.

Questions, answered.

Which tuning solutions are available for the INFINITI FX on the SH705823N?

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 SH705823N ECU software on this model?

Yes — the INFINITI FX on the SH705823N 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.