just got my new filter for my injen intake.. its the new (newest) injen filter with the velocity stack which is pretty sweet...smooth flow where its joined to the pipe.. anyways it make 2 tones at the same time.. the regular high pitches metal on metal like tone of free airflow ... then a mid (melodic) type tone.. its pretty nice... but anyways thought i'd share i gotta get pics of that, my new tires, and my new knob soon