LEXUS · GEN1 ECU

LEXUS RX 350 GEN1 tuning files

Tuning file coverage for the LEXUS RX 350 running the GEN1 ECU. The matched variants sit between 286 and 286 HP from the factory. 4 distinct variants are catalogued here. 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 RX 350 coverage Custom ECU tuning file service

Available solutions

Applicable work for the GEN1 on this vehicle. The available set firms up once the exact engine and software are known.

Stage 1 Stage 2

Engine variants & ECU software

4 distinct variants for the LEXUS RX 350 on the GEN1 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 3500 286HP
Engine code: 2GR-FE
Controller brand: DENSO
ECU: GEN1
Stock power: 286 HP
ECU SW: 89663-48M41
ECU HW: 89661-xxxxx
SW upgrade: 348M4100
Calibration: 348M4100

Variant 2

ECU

Catalog engine: 3500 286HP
Engine code: 2GR-FE
Controller brand: DENSO
ECU: GEN1
Stock power: 286 HP
ECU SW: 89663-48M50
ECU HW: 89661-xxxxx
SW upgrade: 348M5000
Calibration: 348M5000

Variant 3

ECU

Catalog engine: 3500 286HP
Engine code: 2GR-FE
Controller brand: DENSO
ECU: GEN1
Stock power: 286 HP
ECU SW: 89663-48M51
ECU HW: 89661-xxxxx
SW upgrade: 348M5100
Calibration: 348M5100

Variant 4

ECU

Catalog engine: 3500 286HP
Engine code: 2GR-FE
Controller brand: DENSO
ECU: GEN1
Stock power: 286 HP
ECU SW: 89663-48M60
SW upgrade: 348M6000
Calibration: 348M6000

Related vehicles

Other vehicles built on the GEN1 controller or the same engine — handy when a platform spans several models and makes.

Questions, answered.

Which tuning solutions are available for the LEXUS RX 350 on the GEN1?

Stage 1, Stage 2. The exact set depends on the specific engine and software version.

Do you cover the GEN1 ECU software on this model?

Yes — the LEXUS RX 350 on the GEN1 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.