I remember reading somewhere that it is designed to lower the intake sound of the system. ie. if it was just the airbox, it would be louder. But I'm no acoustic engineer so can't explain it any further.
__________________
Manual 2003 Machine Silver 5 Door LR Focus Zetec. Mods: Ford Racing CNC'd cylinder head milled .040", 3 angle valve grind. Ford Racing Stage II camshafts. Ford Racing cam gears. Ford Racing long tube header. Random Technology hi flow cat. Herrod 2.25" stainless cat-back. Pipercross Viper intake. CFM 65mm throttle body. 2000 ported intake manifold. Herrod Custom SCT tune. Eibach suspension. Quaife ATB diff. Wilwood 13" brakes. Custom ST170 leather interior. www.cardomain.com/ride/2773918
|