Hondata ECU Reflash - 06-11 Civic Si outofstock The N1 back box provides

The N1 back box provides significantly improved exhaust flow and can be used with the stock b-pipe as it uses stock style flanges

VTEC dropped from 4900 to 3900 rpm

A Must have for any S2000 race car

and storage to flash faster while saving all of your maps and logs

Hondata ECU Reflash - 06-11 Civic Si outofstock The N1 back box providesReflash your 2006 2011 Civic Si engine computer this reflash is for the US and Mexican 2006 2011 Civic Si with K20Z3 engine. Fuel, ignition and cam timing optimized. VTEC lowered from 5800 rpm to 4500 rpm. VTEC window added. Cam angle optimized. Rev limiter increased to 8600 rpm California emissions legal (CARB EO D 742) This is for an ECU reflash the ECU is not included. Hondata does not sell direct the reflash must be purchased from a Hondata