Toyota Yaris 1.5 VVT-I 111 hp — Stage 1 file (+4 hp)

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Chip tuning for Toyota Yaris 1.5 VVT-I 111 hp ECU

Toyota Yaris (2005) 1.5 VVT-I 111 hp — mass-market petrol engine of the passenger segment of the Toyota Motor Corporation group (Япония, 1937). Stage 1 chip tuning raises power from 111 to 115 hp (+4 hp, +4%) and torque from 141 to 145 Nm (+4 Nm). A petrol engine built in 2005 — the era before widespread firmware encryption, OBD flash without complications.

GR (Gazoo Racing) is Toyota's performance division (GR Yaris, GR Corolla, GR Supra, GR86). The GR Supra uses the BMW B58 straight-six, an unusual turbo engine for Toyota. Mid-range Toyota petrol engines see a modest Stage 1 gain due to their naturally aspirated design. Toyota has historically focused on naturally aspirated, high-compression engines.

The GR models (Yaris GR, Supra) have a growing tuning culture. Toyota has an active JDM tuning community (GR Supra, GR Yaris, GR86). The Denso ECU is a locked Toyota platform, and most models do not respond to standard chip tuning. The locked Denso platform requires a dedicated tuning toolset. Mid-range Toyota models use high-compression naturally aspirated engines, so Stage 1 yields a modest gain.

Frequently asked questions

How much does the power of the Toyota Yaris 1.5 VVT-I 111 hp increase after Stage 1?

Stage 1 chip tuning on the Toyota Yaris 1.5 VVT-I 111 hp boosts engine output by 4 hp: from 111 to 115 hp. Torque rises from 141 to 145 Nm (+4 Nm).

What changes in the Toyota Yaris ECU after Stage 1?

Stage 1 is a software optimization of the factory ECU firmware of the Toyota Yaris with no hardware changes. The injection, boost, ignition-timing and torque maps are reprogrammed. The gain is +4 hp with no hardware changes.

What is the risk of Stage 1 on the Toyota Yaris 1.5 VVT-I 111 hp?

A remap of the Toyota Yaris 1.5 VVT-I 111 hp is safe — the factory calibration in this mid-range class is conservative, leaving genuine headroom for Stage 1 with no hardware changes.

What is Stage 2 for the Toyota Yaris 1.5 VVT-I 111 hp?

Stage 2 for the Toyota Yaris 1.5 VVT-I 111 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 Yaris remain valid after Stage 1?

After remapping the Toyota Yaris, 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 Yaris?

Reading and writing via OBD takes 25-30 minutes on the Toyota Yaris. 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 Yaris?

Before Stage 1 the original of the Toyota Yaris 1.5 VVT-I 111 hp is read out and saved — returning to the factory state is possible at any time.

How much does chip tuning the Toyota Yaris 1.5 VVT-I 111 hp cost?

The remap price for the Toyota Yaris 1.5 VVT-I 111 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: 31.08.2026 · Source: manufacturer technical documentation · Measurements: CHIPOK dyno