Using an aftermarket tuner:
1. Select a tuner. Choose a tuner suitable for your vehicle and experience level. Popular tuners include DiabloSport, Edge Products, and H&S Performance.
2. Install the tuner. Many tuners are installed by plugging into the OBD-II port, while others may require a more involved process.
3. Adjust the settings. Once installed, follow the tuner's instructions to adjust the fuel settings. Generally, you can adjust parameters like fuel pressure, injector duration, and timing.
4. Test the changes. After adjusting the settings, take your vehicle for a test drive to assess performance and make further adjustments if needed.
