Toyota Sequoia 5.7i VVTI D-4S 386 hp — Stage 1 file (+14 hp)

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Chip tuning for Toyota Sequoia 5.7i VVTI D-4S 386 hp ECU

Toyota Sequoia (2007) 5.7i VVTI D-4S 386 hp — mass-market petrol engine of the passenger segment of the Toyota Motor Corporation group (Япония, 1937). Stage 1 chip tuning raises power from 386 to 400 hp (+14 hp, +4%) and torque from 544 to 560 Nm (+16 Nm). In the CHIPOK database: 2 configurations. A petrol engine built in 2007 — the era before widespread firmware encryption, OBD flash without complications.

Lexus is Toyota's premium sub-brand. Toyota has historically focused on naturally aspirated, high-compression engines. Denso is Toyota's in-house ECU supplier (a locked platform). Toyota's petrol range spans naturally aspirated Dynamic Force engines and turbo units for the GR series.

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 GR Supra with the BMW B58 is a segment of its own, handled with BMW tooling. The top Toyota GR engines (Supra, Yaris GR) mark the ceiling of the Japanese performance segment.

Frequently asked questions

What power gain do you get after chip tuning the Toyota Sequoia 5.7i VVTI D-4S 386 hp?

Stage 1 chip tuning on the Toyota Sequoia 5.7i VVTI D-4S 386 hp boosts engine output by 14 hp: from 386 to 400 hp. Torque rises from 544 to 560 Nm (+16 Nm).

What changes in the Toyota Sequoia ECU after Stage 1?

Stage 1 is a software optimization of the factory ECU firmware of the Toyota Sequoia with no hardware changes. The injection, boost, ignition-timing and torque maps are reprogrammed. The gain is +14 hp with no hardware changes.

Does Stage 1 make sense on the Toyota Sequoia 5.7i VVTI D-4S 386 hp with this much power?

On the top-spec Toyota Sequoia 5.7i VVTI D-4S 386 hp engine, Stage 1 is the starting point before Stage 2 with a downpipe, intake and a larger intercooler. The mass-market factory calibration leaves substantial headroom for an aggressive software tune.

What is Stage 2 for the Toyota Sequoia 5.7i VVTI D-4S 386 hp?

Stage 2 for the Toyota Sequoia 5.7i VVTI D-4S 386 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.

Does the factory warranty of the Toyota Sequoia remain valid after Stage 1?

After remapping the Toyota Sequoia, the official factory warranty on the engine and gearbox is lost (this applies to any manufacturer when the ECU is modified). CHIPOK guarantees the quality of the calibration and free revisions.

How long is the wait for a Stage 1 remap for the Toyota Sequoia?

Reading and writing via OBD takes 25-30 minutes on the Toyota Sequoia. Bench reading (BDM/JTAG) takes about 60 minutes plus refitting. Remote file processing at CHIPOK takes 5-30 minutes.

How do you roll back to the factory firmware of the Toyota Sequoia?

Before Stage 1 the original of the Toyota Sequoia 5.7i VVTI D-4S 386 hp is read out and saved — returning to the factory state is possible at any time.

How much does chip tuning the Toyota Sequoia 5.7i VVTI D-4S 386 hp cost?

The remap price for the Toyota Sequoia 5.7i VVTI D-4S 386 hp is dynamic and is calculated in the CHIPOK calculator based on the selected options. A credit-based payment model, with no subscription fees.

Last updated: 01.09.2026 · Source: manufacturer technical documentation · Measurements: CHIPOK dyno