Looking at upgrading my factory airbox (R53 2003 Mini Cooper S) and only want to do this once in the grand scheme of my future tune so would appreciate if anyone could advise me what the best option is for power gain.
My mrs's MR2 receives more gain from a panel filter upgrade then an induction...
Got a new BPV which i'm looking to fit at the weekend. Looks fairly simple in principle but maybe a bit of a ball ache to get to?
Anyone got any advice when fitting it? Or has anyone made a guide? :thumbup: