"Porting" the factory intake box
I have the stock intake box and a factory filter, attached to an HKS intake tube. Stock otherwise, although I just ordered a Dezod green header.
Opening up the factory intake today, I noticed all these fins and ridges inside the air box, just downstream from the filter.
Has anyone ever tried to dremel these fins off, for straighter airflow through the filter? I'd guess they're either overengineered "structural stability members", and/or for sound dampening of the airstream, like the resonator chambers built into the stock intake tube.
I might try it, for the cost of a dremel bit it's worth a try for an externally invisible airflow mod.
2003 IS300 Sportcross LSD, V.S.C., Premium Sound