Tag: automotive remapping

How to Measure Your Car’s Performance After a Tune

Getting a professional tune (remapping) is the most exciting way to unlock your vehicle’s hidden potential. However, simply saying “it feels faster” isn’t enough. To truly understand the gains, you need empirical data. Here is how we at North Tuned recommend verifying your performance increase:

1. Dyno (Dynamometer) Testing
This is the gold standard. A dyno measures the horsepower (HP) and torque (Nm) delivered to the wheels.

Before/After: Performing a run right before and right after the tune provides a clear picture of the changes in the power band.

Health Check: It allows technicians to monitor Air-Fuel Ratios (AFR) to ensure the tune is running safely under load.

2. GPS-Based Performance Meters (Dragy or VBOX)
Devices like Dragy are the best way to turn feelings into facts. These use high-frequency GPS (10Hz or higher) to track acceleration with extreme precision.

0-100 km/h & 100-200 km/h: These are the industry standards for measuring real-world acceleration.

Slope Correction: These devices account for road incline, giving you a “valid” and honest result regardless of the terrain.

3. OBDII Data Logging
Speed is only one part of the story; how the engine achieves that speed matters for longevity. Use an OBDII scanner to log:

Boost Levels: Is the turbo hitting the requested targets?

Ignition Timing: Is the engine running efficiently without “pulling” timing due to knock?

Intake Air Temperatures (IAT): Is your cooling system handling the extra power effectively?

4. In-Gear Acceleration (Flexibility)
This is the most relevant metric for daily driving. For example, measure the time it takes to go from 80 km/h to 120 km/h in 4th gear. The reduction in this timeframe is the best indicator of your car’s increased “punch” and torque delivery.