Hondata ECU Reflash - Civic Si 2002-2004 is a Hondata engine management product designed for compatible Honda and Acura applications.

Reflash your 2002-2004 Civic Si engine computer. Fuel, ignition timing and cam timing optimized. Rev limiter raised to 7700rpm. 10-12 peak hp gain depending on the dyno and modifications 4-9ft lb torque across the rev range Power peak raised 400 rpm from 6300 rpm to 6700 rpm (higher with headers) 0-60 mph times improved by 1 second. Fully dealer compatible -works with all Honda scan tools and equipment.

Fitment note: Confirm the exact vehicle year, model, engine, transmission, ECU, emissions version and region before ordering. Professional installation or tuning may be required.