what would be the first things to a 2008 135i?
intake or just a drop in filter, De-cat (maybe full xhorst), is it easier/cheaper to import down pipes or just get locally made stuff? and Software (exceed or promotec) is a FMIC upgrade worth it?
new to BMW's...
intake or just a drop in filter, De-cat (maybe full xhorst), is it easier/cheaper to import down pipes or just get locally made stuff? and Software (exceed or promotec) is a FMIC upgrade worth it?
new to BMW's...