While simple in principle, the S-Flo for the 2.7T produces quite tangible increases in engine power and smoothness. The resulting improvements are from a combination of air filter design and the precise mandrel bent transition tube. The ITG Maxogen cone filter used in the kit provides nearly 30% more intake surface area over a drop in panel filter and has a unique venturi shaped outlet that reduces air turbulence.
Our scan tool measurements recorded increases of 25 grams-per-second of air through the mass air flow sensor (MAF) at various points of the rpm range, with a dramatically smoother flow curve. Dyno tests repeatedly show a 8-9hp power gain to the wheels!
The S-Flo installs completely within the stock airbox and therefore has a stock appearance and sound. Very stealth.
ITG air filters are reusable and need periodic cleaning. Please see the following documents for proper cleaning and oiling instructions. Air filter spray oil is available above.