Yeah the ecu profile was tweaked. If I'm cruising I'm usually at 4-4.5k RPM. What is your riding style?

Riding style fairly aggressive weekend back country, occasionally ride to work San Diego

www.youtube.com/watch?v=m5BzbZv7PBw

Do you spend a long time above 7k RPM?

only the occasional blast above 7k mostly stay in the 5 to 6k range

The power band is pretty flat between 5k and 6k, so are you really gaining much by cruising there? I ride around at 4k because that is the slowest engine speed i can maintain without obnoxious vibrations. The hills here are pretty tame, so the engine never seems to bog when climbing them. My sprockets are 14/43 btw. Lower engine RPM leads to better fuel economy .

Is your air filter clean?

YMMV, cheers and enjoy your S4RS..

It's in for 15k service so air cleaner will get replaced. I'll see how it does after. Same 14/43 here
thanks for the info