Welcome to EM...
The K-Series has some great potential for not only FE, but emissions reductions.
We have the K24 in an '06 TSX. The engine benefits from the vehicle's low Cd and high compression. Too bad it takes costly premium fuel
I recall another member at another site that installed some serious under-vehicle aero treatments on his Element that helped.
Enjoy the site, and...
Best FE to ya
RH77