thanks for the advice. im definitely sticking with the drop in/stock config for intake.
im sure if i switched to a tube setup, my mechanic would never let me hear the end of it. hahaha and i trust him completely because good mechanics are hard to find these days.
I installed a K&N drop in in my K20Z3 without tuning and all I got was a more intimidating throaty growl but lost more precious torque. It seems the stock airbox design will suffice with just a K&N drop in even with more aggressive camshafts installed. I settled with the stock filter until I get my cams from Santa.
Check out Ex Manila for complete exhaust systems. I heard they supply Orange Performance.