I no this is a touchy subject but here goes .... i currently run a k&n 57i filter and im upgrading to the 3" MAF as soon as i get a 3 bar FPR and air filter as i just scored a set of saab reds for Â£22.60 posted so the F21 upgrade is closer than i expected, so now i have no air box so need a decent filtration/flowing open filter im tempted to get the AEM dry flow just because its red and will carry on the theme !! what do you guys run/recommend ????