Thanks for the advice guys. The Jetex ones seem very good vfm. I think I may go for one of these, as they seem tried and trusted.....will make up my mind this week and let you all know how it goes this weekend. I am not a mechanic but doing a bit of research it seems that you need to maximise the RAM, which means sucking as musg cold air in as possible. therefore it seems a bit daft keeping the filter near the engine....what do you think about just popping it on to the end of the standard pipe that travels to the standard box ? The standard box will come away and that leaves a nice big gap for the new filter to suck on the cold air venting in through the valance ?