ENGINE · 2005-2009
LS2 tuning
LS2 — GM 6.0L V8 Gen IV (Corvette C6, Trailblazer SS). V8 NA pushrod, 6.0 L, 400-426 HP stock. Cars: Chevrolet Corvette C6 base, Trailblazer SS, GTO LS2, Pontiac G8, Holden HSV.
Engine specs
| Engine code | LS2 |
|---|---|
| Configuration | V8 NA pushrod |
| Displacement | 6.0 L |
| Production years | 2005-2009 |
| Stock power | 400-426 HP |
| ECU family | GM E38 / E40 → |
Tuning stages on LS2
| Stage 1 | +15-25 HP |
|---|---|
| Stage 2 | +30-50 HP |
| Stage 3 | +200+ HP (supercharger) |
Conservative real-world estimates. Actual results depend on hardware health, fuel quality, ambient temperature, and the specific calibration written.
Services available on LS2
Common DTC codes on LS2
Brands running LS2
Workshop workflow
- Read the LS2 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 GM E38 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.