Chevrolet Express Stage 1
8 engines – 250–310 hp
8
engines
+31 hp
Max gain
+9%
Avg. gain
✓
Eco Tuning
2001 - 2007
4 engines
| Engine | Fuel | Stock (hp) | Stage 1 (hp) | Gain |
|---|---|---|---|---|
| 6.6 V8 250hp | Diesel | 250 | 281 | +31 (12%) |
| 4.8 V8 275hp | Petrol | 275 | 298 | +23 (8%) |
| 6.0 V8 304hp | Petrol | 304 | 327 | +23 (8%) |
| 5.3 V8 290hp | Petrol | 290 | 311 | +21 (7%) |
2008 - 2014
4 engines
| Engine | Fuel | Stock (hp) | Stage 1 (hp) | Gain |
|---|---|---|---|---|
| 6.6 V8 250hp | Diesel | 250 | 281 | +31 (12%) |
| 4.8 V8 279hp | Petrol | 279 | 303 | +24 (9%) |
| 6.0 V8 304hp | Petrol | 304 | 327 | +23 (8%) |
| 5.3 V8 310hp | Petrol | 310 | 332 | +22 (7%) |
FAQ
Is Stage 1 safe for the engine?+
Yes, Stage 1 is a mild optimization within factory safety margins. We use dealer-level equipment and verify results on a dyno.
How long does it take?+
Usually 2–4 hours, including diagnostics, remapping, and a control measurement on our dynamometer.
Does it affect fuel consumption?+
Stage 1 can reduce consumption (better torque curve) or slightly increase it under aggressive driving. On average, consumption stays the same.