ENGINE · 2007-2022
VQ37VHR tuning
VQ37VHR — Nissan / Infiniti 3.7 V6 NA (370Z, G37, Q50/Q60). V6 NA DOHC VVEL, 3.7 L, 330-355 HP stock. Cars: Nissan 370Z Z34, Infiniti G37, Q50, Q60, FX37, EX37.
Engine specs
| Engine code | VQ37VHR |
|---|---|
| Configuration | V6 NA DOHC VVEL |
| Displacement | 3.7 L |
| Production years | 2007-2022 |
| Stock power | 330-355 HP |
| ECU family | Hitachi 32-bit ECU + Uprev / OsiriS Tuning → |
Tuning stages on VQ37VHR
| Stage 1 | +10-20 HP |
|---|---|
| Stage 2 | +20-40 HP (intake + headers + cat delete + tune) |
| Stage 3 | +200+ HP (Stillen / GTM supercharger / FAST Intakes turbo kit) |
Conservative real-world estimates. Actual results depend on hardware health, fuel quality, ambient temperature, and the specific calibration written.
Services available on VQ37VHR
Common DTC codes on VQ37VHR
Brands running VQ37VHR
Workshop workflow
- Read the VQ37VHR 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 Hitachi 32-bit ECU + Uprev 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.