Lexus RX 350 (3.5i V6) 300 hp — Stage 1 file (+10 hp)

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Chip tuning for Lexus RX 350 (3.5i V6) 300 hp ECU

Lexus RX (2016) 350 (3.5i V6) 300 hp — premium petrol engine of the passenger segment of the Toyota Motor Corporation group (Япония, 1937). Stage 1 chip tuning raises power from 300 to 310 hp (+10 hp, +3%) and torque from 370 to 390 Nm (+20 Nm). ECU — Denso 76F00XX. Flashing method: OBD or Bench depending on the unit's protection. A petrol engine built in 2016 — a Tricore platform without strong protection; OBD access works.

The Lexus LC and LS are the brand's flagship models, powered by V8 and V6 engines. Lexus specialises in premium saloons and SUVs. Lexus shares platforms and engines with Toyota's premium segment. Denso is Toyota's in-house ECU supplier (a locked platform). The Toyota GR-series delivers a solid gain from Stage 1 on the turbo engines. The Denso ECU is a locked Toyota platform, with read/write via specific tools.

The Denso ECU is a locked Toyota platform, and most models do not respond to standard chip tuning. Toyota has an active JDM tuning community (GR Supra, GR Yaris, GR86). The Toyota Denso ECU requires dedicated read/write tooling. High-output Toyota GR models sit in the performance segment with solid Stage 1 headroom.

Frequently asked questions

What is the Stage 1 effect on the Lexus RX 350 (3.5i V6) 300 hp?

Stage 1 chip tuning on the Lexus RX 350 (3.5i V6) 300 hp boosts engine output by 10 hp: from 300 to 310 hp. Torque rises from 370 to 390 Nm (+20 Nm).

What changes in the Lexus RX ECU after Stage 1?

Stage 1 on the Lexus RX 350 (3.5i V6) 300 hp is a software ECU calibration with no hardware changes. The key maps (boost/ignition/lambda/torque) are adjusted while factory tolerances are preserved. The gain is +10 hp with no hardware changes.

What does Stage 1 give on the powerful Lexus RX 350 (3.5i V6) 300 hp?

Stage 1 on the powerful Lexus RX 350 (3.5i V6) 300 hp “lifts” the factory limiters with no hardware changes. The gain is noticeable in the mid and upper range. There is headroom left for moving to Stage 2 (downpipe + intake + intercooler).

How does Stage 2 differ from Stage 1 on the Lexus RX 350 (3.5i V6) 300 hp?

Stage 2 for the Lexus RX 350 (3.5i V6) 300 hp is Stage 1 plus hardware changes: a downpipe, a larger intake and a performance intercooler. The gain is considerably higher, but it requires professional component selection.

What control unit does the Lexus RX 350 (3.5i V6) 300 hp run?

The control unit of the Lexus RX 350 (3.5i V6) 300 hp is the Denso 76F00XX. Before flashing, the engineer identifies the exact revision and selects the write method.

Does Stage 1 void the warranty on the Lexus RX?

Stage 1 on the Lexus RX voids the factory warranty on the engine and transmission — this is standard for all manufacturers. CHIPOK provides its own warranty on the quality of the remap.

How quickly is chip tuning of the Lexus RX 350 (3.5i V6) 300 hp done?

The full remap cycle for the Lexus RX — from reading to writing the final file — takes 30-90 minutes depending on the ECU access method. The file is prepared at CHIPOK in 5-30 minutes.

Can you return to stock after Stage 1 on the Lexus RX?

The original Lexus RX ECU is always saved before flashing. Rolling back to the factory firmware is done with the same programmer in 25-30 minutes.

How much does Stage 1 cost for the Lexus RX 350 (3.5i V6) 300 hp?

The cost of Stage 1 for the Lexus RX 350 (3.5i V6) 300 hp is calculated in the calculator on this page — you select the options (DPF off, EGR off, AdBlue off, DTC off, etc.) and the price is capped by the package Max Price. Payment is by credits (1 cr = 1 €), with no subscriptions.

Last updated: 30.08.2026 · Source: manufacturer technical documentation · Measurements: CHIPOK dyno