Yes I have... Thanks. It is on and one tank through and only 1 MPG better.

 

Good for you. But with MPG differing that little, it is most likely your driving habits. A lot of freeway driving will boost my MPG to over 25 but mostly street driving will bump it down to around 21-22. Frequent VTEC engagement and high boost also lower my MPG.

But hey...if it works for you...