ENGINE · 2012-2021
FA20 NA tuning
FA20 — Toyota / Subaru 2.0 NA flat-4 (86 / BRZ / GT86). F4 NA D-4S direct + port injection, 2.0 L, 197-205 HP stock. Cars: Toyota GT86 / 86, Subaru BRZ ZN6/ZC6, Scion FR-S.
Engine specs
| Engine code | FA20 NA |
|---|---|
| Configuration | F4 NA D-4S direct + port injection |
| Displacement | 2.0 L |
| Production years | 2012-2021 |
| Stock power | 197-205 HP |
| ECU family | Denso 32-bit + EcuTek / Cobb / RomRaider → |
Tuning stages on FA20 NA
| Stage 1 | +5-12 HP |
|---|---|
| Stage 2 | +15-30 HP (UEL/EL headers + intake + tune) |
| Stage 3 | +200+ HP (supercharger HKS / Edelbrock / turbo kit Jackson / FA20DIT swap) |
Conservative real-world estimates. Actual results depend on hardware health, fuel quality, ambient temperature, and the specific calibration written.
Services available on FA20 NA
Common DTC codes on FA20 NA
Brands running FA20 NA
Workshop workflow
- Read the FA20 NA ECU via OBD or bench using your existing flasher (KESS3, AutoTuner, MPPS, Trasdata, FRF).
- Open Softechpro V5 and drag the .bin / .ori / .hex / .s19 / .frf onto the workspace. The Denso 32-bit + EcuTek variant is auto-detected.
- Pick the service tab and apply Stage 1 / 2 / 3 / DPF OFF / EGR OFF / AdBlue OFF as required.
- Save patched .bin — the outer CRC is recomputed automatically.
- Flash via your existing flasher. Adaptation reset via OEM scan tool if required.