Well sild it last week. i'd done even more to it like 17" alloys etc but just needed to get something different so i've moved over to 4x4 with a terrano.
yeh economy was bad, around 12 mpg through the winter months upto 17 in warmer weather. the terrano is a 2.4 petrol but is doing much better around 23mpg.
no plans to mod it except maybe some mud tyres, but time will tell. I find it difficult to leave things standard.