[flashdragoon]

I am a fairly new Legend owner (have had mine for approx 2 month) I understand S3-S4 has something to do with performance but what is the diff from S3-S4? thanks

 

[Crazi]

It changes your transmission shifting to Sport mode. It raises the shift points to redline depending on throttle input. S3 is sport mode but the car will stay in third gear. S4 will shift to fourth and overdrive.