FlashPro takes the top spot as the most crucial modification you can make. While many aftermarket parts promise instant horsepower and torque gains, realizing their full potential demands precise tuning. If you're considering other performance upgrades like a cold air intake or exhaust, FlashPro is essential to extract maximum performance from your new parts.

Hondata offers a cutting-edge tuning device that empowers individuals to optimize their vehicle's performance through advanced computer programming. While technically usable by individuals, we strongly recommend consulting with a professional tuner for safe and precise implementation. Inexpert use can negatively impact your vehicle's performance.

By connecting FlashPro to your laptop's USB and the vehicle's diagnostic port, you gain access to live tuning, various calibrations, and extensive real-time and stored data logging capabilities. The factory ECU does not need modification for FlashPro to work with the Civic Si and 2012-2014 ILX.