Subaru · Stage 1 Remap

Stage 1 Remap — Subaru WRX STI 2.5

2.5 H4 turbo 300-341 hp · 2008-2021 · ECU Denso · Typical gain: +15-25%

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What this does

Stage 1 increases injection and boost via map tweaks — no hardware changes. Typical real-world gain on the Subaru WRX STI 2.5: +15-25%. Drivetrain stays factory; reverts cleanly with original BIN.

How to apply it

  1. Get a DaVinci Deluxe license (Standard 299€ lifetime, Pro 499€, Monthly 79€, Yearly 790€).
  2. Read the BIN from your Denso via any OBD/bench tool (KESS, Autotuner, FoxFlash, MagicMotorsport).
  3. Open the file in DaVinci Deluxe, toggle Stage 1 Remap, save the patched BIN. Checksum is auto-corrected.
  4. Flash the patched BIN back to the Denso. Done.

Other services for the Subaru WRX STI 2.5

Stage 2 TuneSpeed Limiter RemovalPops & BangsDTC / Fault Code RemoverImmobilizer OffHardcut Rev Limiter
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