i have a old landrover qwner international mag here from 2008 stating a guy called Jeremy j Fern fitted a larger fmic that had x3 the surface area of the standard one used on a 2.5 p38 and went from 23mpg to 32mpg and from 136bhp to 196 bhp as anyone else found this? i dont care about the bhp but definatly the mpg!