Leawood911:

And when driven that way, like on long highway runs, the mileage gains are very real. You know me and my endless long road trips.  911s are the ultimate long distance machine. If you have not driven a 911 for at least 12 hours straight to see where it can take you you have missed out. 

Lon the other hand boost is highly addictive and during my three mile drive to work I likely get 10 miles per gallon. Good news gas is $1.60 here per gallon. 

Yes, but you need to drive at 55-60 miles/h or up to 100km/h..