All you tai kors and sifus.. Can anyone help shed some light on these things? Price perhaps? Do they even work? Hmmm.. My E46 is in dire need of more HP.. Air filters.. Plugs.. Coil Booster.. Volt Stabilizer.. ECU Remapping.. Sprint Booster.. Exhaust Header.. De-Cat.. Crank Pulley.. High Cam.. Help me out lar.. if not how to catch up with you guys when convoying..