Remap Calculator
Estimate the potential horsepower and torque gains from an ECU remap.
Understanding ECU Remapping
Estimate the potential horsepower and torque gains for your car with our ECU remap calculator. An ECU (Engine Control Unit) remap, also known as tuning, modifies your car's software to optimize performance.
Key Factors Explained
- Original HP/Torque: The baseline performance figures of your vehicle before any modifications.
- Remap Stage: This determines the extent of the software changes and expected gains.
- Stage 1: A software-only tune optimized for a standard vehicle with no hardware modifications. It provides a reliable power increase while maintaining factory reliability.
- Stage 2: A more aggressive tune that requires supporting hardware upgrades (e.g., an upgraded exhaust, intercooler, or air intake) to achieve greater performance gains.
- Engine Type: This calculator provides a general estimate, primarily for turbocharged engines, which see the most significant gains from remapping. Naturally aspirated engines will have much lower gains.
The Formula
Our calculator uses a percentage-based formula to estimate potential gains. These percentages are conservative averages for turbocharged engines.
New HP = Original HP × (1 + Gain Percentage)
New Torque = Original Torque × (1 + Gain Percentage)
Frequently Asked Questions (FAQ)
Is ECU remapping safe for my car?
When performed by a reputable and experienced tuner, a Stage 1 remap is generally very safe and operates within the mechanical tolerances of your vehicle's components. However, any modification that increases power can lead to increased wear on engine and drivetrain parts over time and may void your manufacturer's warranty.
What's the difference between Stage 1 and Stage 2?
A Stage 1 remap is a software calibration for a completely stock car. A Stage 2 remap is designed to take advantage of upgraded hardware components like a high-flow downpipe, larger intercooler, or performance intake, allowing for a more aggressive tune and significantly higher power gains.
Will remapping affect my fuel economy?
It depends on your driving style. Many remaps can actually improve fuel economy during normal, light-throttle driving by optimizing engine efficiency. However, if you frequently use the extra power from the remap, you can expect your fuel consumption to increase.
For a more in-depth guide, read our detailed article on this topic.