My air filter (it's one of those circular k&n ones, but it's been squashed so it actually fits in to the engine bay) is absolutely filthy, which I believe has quite a bit to do with the fact that Freddie is idling like a mofo at the mo.
I can't get a new air filter until next week and was wondering whether it'd be a good idea to take out the air filter and give it a bit of a wash and put it back on so the mini's running a bit better until the new one's put in? If yes, what would be the best thing to wash it with and how












