Is it right that the temp gauge goes to half way in only a km or two? I can't believe that the car is warmed up already. The most fuel I have ever put in at once is 45 litres, and this when according to the gauge, it was almost empty. The tank holds 65 litres. So I can only go 420 kms before filling, but where is the other 20 litres? My idle according to the rpm gauge reads about 1100-1200 at idle, even when properly warmed up. Yet, when I stop at a light, the engine sounds like it will almost die, like it stutters, then is fine when siting at the light with my foot on the brake.<P>I think maybe the flap in my airbox isn't working properly, if it isn't can it contribute to bad fuel economy and a loss of power if it is constantly getting warm engine air? Thanks.