Considering an ECU remap for your Holden Monaro 5.7 V8 408hp? A Stage 1 remap can take this 2001 - 2005 petrol engine from 408 BHP to 430 BHP and from 460 Nm to 480 Nm of torque (naturally aspirated). This engine scores 3/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Holden Monaro can achieve.
The Holden Monaro 5.7 V8 408hp is a 5.7L naturally aspirated petrol engine producing 408 BHP and 460 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 430 BHP and 480 Nm — a gain of around 22 BHP (5%) and 20 Nm (4%).
This engine has low remap suitability, though the available headroom is limited, so gains are modest compared to higher-output variants. The tuning headroom is classified as limited, based on the percentage gain available from the factory output.
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.. High tuned torque: check transmission torque capacity and service history.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
| Engine | BHP | Gain | Torque | Gain | Score |
|---|---|---|---|---|---|
| 5.7 V8 306hp | 306 → 325 | +19 | 460 → 480 | +20 | Limited (3.5/10) |
Get a personalised remap quote for your Holden Monaro. We'll connect you with a trusted professional in your area.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method.
We recommend discussing your specific vehicle with a qualified remap professional before proceeding.
