BHP+18 hp (6%)
Standard
302 hp
Tuned
320 hp
Torque+21 Nm (5%)
Standard
414 Nm
Tuned
435 Nm
Suitability
Limited (3.5/10)Gains Profile
Limited headroomHeadroom
LowGMC Sierra 4.8 V8 302hp ECU Remapping
Considering an ECU remap for your GMC Sierra 4.8 V8 302hp? A Stage 1 remap can take this 2008 - 2013 petrol engine from 302 BHP to 320 BHP and from 414 Nm to 435 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 GMC Sierra can achieve.
How this engine compares
- 21stof 21 GMC Sierra engines by power gain
- 13%of the 9,842 engines we hold gain data for see a smaller power increase
- 12%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The GMC Sierra 4.8 V8 302hp is a 4.8L naturally aspirated petrol engine producing 302 BHP and 414 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 320 BHP and 435 Nm — a gain of around 18 BHP (6%) and 21 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.
Considerations
!Naturally aspirated engine: gains are usually limited; results vary widely.
!High tuned torque: check transmission torque capacity and service history.
Other Sierra 2008 - 2013 Engines
| Engine |
|---|