Variant 1
ECU- Catalog engine
- 2000 268HP
- Controller brand
- HITACHI
- ECU
- RH850
- Stock power
- 268 HP
- ECU SW
- 237105NL4B
- ECU HW
- 237035NA0B
INFINITI · RH850 ECU
INFINITI QX50 RH850 tuning files
Everything we work with on the INFINITI QX50 fitted with the RH850. Stock output across the matched variants spans 268–268 HP. We start conservative here — Stage 1 and Stage 2 are the dependable baseline. Every file is matched to the exact calibration on your vehicle and signed off by an operator.
Available solutions
Solutions that apply to the RH850 on this vehicle platform. The exact set depends on the specific engine and software version.
Engine variants & ECU software
2 distinct variants for the INFINITI QX50 on the RH850 ECU. Reference the engine and controller software when you upload.
Variant 2
ECU- Catalog engine
- 2000 268HP
- Controller brand
- HITACHI
- ECU
- RH850
- Stock power
- 268 HP
Related vehicles
Other vehicles built on the RH850 controller or the same engine — handy when a platform spans several models and makes.
Questions, answered.
Which tuning solutions are available for the INFINITI QX50 on the RH850?
Stage 1, Stage 2. The exact set depends on the specific engine and software version.
Do you cover the RH850 ECU software on this model?
Yes — the INFINITI QX50 on the RH850 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.