Considering an ECU remap for your Pontiac GTO 6.0 V8 400hp? A Stage 1 remap can take this 2004 - 2006 petrol engine from 400 BHP to 420 BHP and from 542 Nm to 570 Nm of torque (naturally aspirated). This engine scores 3.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Pontiac GTO can achieve.
The Pontiac GTO 6.0 V8 400hp is a 6.0L naturally aspirated petrol engine producing 400 BHP and 542 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 420 BHP and 570 Nm — a gain of around 20 BHP (5%) and 28 Nm (5%).
This engine has limited 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 350hp | 350 → 370 | +20 | 495 → 525 | +30 |
| Limited (3.5/10) |
Get a personalised remap quote for your Pontiac GTO. 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.
