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......(would this make a difference to mpg?).(which is more like it) on a motorway run with a very light foot. !! That should give you a starting basis to compare. If the above is deteriorated, impact the fuel economy.!! 
.....dont know if thats bad or not ?? 
never done the mpg test but I often put about 120 - 140 miles on it over a weekend for roundabout a tenner, £15 if I batter it. At least 80 of those miles are motorway cruising so that's a pretty fair mix. It just seems to run on fresh air once it's on the motorway!!! In town in sport mode (yes its an auto 
), overdrive off and booting it, its very bad, I can almost see the fuel guage dropping, 15 at best. Town, economy relaxed mode (thats what I call it), overdrive on, pootling about, much better I guess about the early 20's. Bearing in mind that my speedo reads in MPH but the odometer/mileage meter reads in KPH, import . Motorway driving in 'relaxed' mode gives early to mid 30's. Spirited motorway driving, mid 20's. The thread is on here somewhere, someone got 47 mpg 
MID LIFE CRISIS wrote:I got 42 mpg at a steady 70mph on a run up the M1 last year.
(normal day to day driving) 
that bad, just a little.- do they go gradually? or is it either completely fine or completely broke?
JohnnyC wrote:MID LIFE CRISIS wrote:I got 42 mpg at a steady 70mph on a run up the M1 last year.
That would've been me
It was almost 500miles driven at an almost constant 60mph
I'm currently getting around 29mpg
Think JJ is right though about the ignition components as your mpg doesn't seem
One thing I'd like to know is, the lambda sensor
One thing I'd like to know is, the lambda sensor
. which in turn will probably increase the mpg. Widebands lifespans are debateable.. I've not seen one last longer than 2 years.... a change in the 02 sensor has resulted in an increased mpg.....the error codes are only apparent on the heater element of the lambda ( apart from Rev 1/2 turbos - no heater ). taking into consideration the weather as well.. the EFi maps will stay on the warm up enrichment a little longer than in the summer = increased fuel usage. With the 3S block being of a cast iron construction, it does take considerably more time than full aluminium / alloy construction engine designs.....Factors.. like flat tyres / brakes binding etc... need to all be considered... poor on the petrol ... and these are renowned for being brilliant when you think of the performance they produce ( often Circa 300 miles to a tank ) .. turned out that one of the front calipers and the rear calipers was binding on slightly... might as well have been towing a caravan around with him.. it'll pay for itself in a few month / weeks if you're a daily driver.... with the increased milage you'll reward yourself with. Nothing worse that tootling about and getting the same rubbish fuel consumption as if you'd been kicking it all over..- I grew it myself you knowGersen wrote:Did 321 miles on a tank coming back from France in my Rev 2 Tubbie after mapping.
! 
JJ wrote:Gersen wrote:Did 321 miles on a tank coming back from France in my Rev 2 Tubbie after mapping.
I've managed 360 on a stock rev 3 setup
- stupid damn AFM - my scheme is to go MAP for response now - should help the economy too.- I grew it myself you know