Honda Flashpro ECU - S660 JW5 Flywheels They’re also not designed to

They’re also not designed to handle increased boost levels

EJ25 engines require no modification

completing the process and giving you a block which looks as good as it did when it left Japan 20+ years ago

and an overall improved driving experience

Honda Flashpro ECU - S660 JW5 Flywheels They’re also not designed toOverview We are pleased to announce the completion of the Hondata Flash Pro engine ECU tuning tool for the S660 (JW5). Flash Pro completes ECU tuning simply by installing the pre tuned calibration data (Flash Pro data). It is also an excellent tuning tool that allows for on vehicle setup tailored to your specific car. Available Calibration Stages Three types of pre tuned data are available as standard, each with optimized fuel mixture and ignition