I would be very interested in your actual MPG figures from a measured fill up against a known mileage measured either on a map or gps. Prior to the final tweak my car was returning around 30mpg on general driving, but is now around 27-28 mpg. Considering the engine is putting out around 300bhp then 27-28 is probably not bad.
Ok, so, just back, total distance 1208.9 miles, fuel used 190.49, average mpg 28.66. The best return was mostly motorway/A roads from Betws-Y-Coed to Holyhead and on to Belfast (34.5) worst 25.6 which was mostly B roads and taking a few friends out for "demos".
No dramas on route, and now beginning to trust her more and more....lovely.
