I installed my volant CAI lastnight. its pretty sweet. not quite the performance gains that i was hoping for but thats to be expected. love the sound of my engine now though. real beefy [burnout] went to a local get together where there were lots of fast imports and domestics, my friend wanted me to rev my engine so he could hear it, so i did and everybody looked over cause i they were probably wondering why this seeming stock looking focus sounds better than you'd expect. but yeah cool investment.