[chefdave]

Hi have not done aba testing on my air dam but stablitiy in cross winds is remarkably improved. Have not noticed a drop in mpg maybe a slight gain. Bottom of car is quite flat from factory. Think i will gain more by reducing parachute effect on rear bumper. Averaging 40 imperimal mpg on a 2.0 auto pugeot 406 estate. Car weighs about 1800kg. Full 70 litre tank might increase it abit. Gearing is almost diesel like. Top gear pulling 2100 revs at 60mph. Very high for a heavy 2.0 auto. Pugeout factory figures are nax 37mpg at 55mph. So must of gained something.