We have released a small update that completely eliminates the rev-hang issues that the Honda Civic Si exhibits. Rev-hang presents itself during gearshift events. When the clutch is depressed and the throttle is closed, drivers can see that the engine rpm stays constant for a period of time, not dropping even though the driver has completely lifted off the throttle pedal. This is how Honda tuned the 2006-2009 Civic Si and is considered normal behavior from the factory.

This AccessPORT update completely eliminates this rev-hang phenomenon. Engine RPM drops immediately when the clutch is depressed and throttle is closed. The vehicle responds much more like it has a cable controlled throttle plate.

All AccessPORT maps for the Honda Civic Si have been upreved to v1.04. If you are currently running an Off-The-Shelf map, please visit the Honda Civic AccessPORT Map Database and download the maps most appropriate for your engine modifications.

If you are running a customized map, you can convert your map to eliminate rev-hang using the Honda Map Conversion Tool. Instructions and conversion tool download links can be found on the Honda Map Conversion Tool Page. Follow the instructions listed on the page.

This update has been tested on multiple vehicles with positive results. Please let us know what you think once you have had a chance to use this update.

Other development efforts are progressing well. We are continuing to work hard to bring the best tuning solution available for Honda tuning enthusiasts.

Happy Holidays!

Gary Sheehan
Marketing