i have just recently installed bluefin map for high octane fuel it has transformed the car i leave standard 170s behind i know some of the st 170s were lacking in bhp standard i must have a good one because the car is quick,Also my flat spots have gone engine runs better and sounds better its how an st170 should have been from factory!
i am doing 300 miles to a tank mixed driving incl a bit of welly and 350 to a tank if drive realy sensible. which is pretty much the same as before.