The AWE Tuning S-FLO Intake was engineered to improve the 4.2L V8s ability to draw in cool air while creating impressive power gains. "We focused on the components where there was potential for power, as opposed to replacing quality OEM sections. By doing so, AWE Tuning has created an Intake system that truly unlocks Performance: Just big power gains, tasteful aesthetics, and perfect daily drivability.?? " remarks AWE Tuning Director of Engineering Chris Dollery. Highlights of this system: Peak gains: +11 hp and +9 ft lb at the crank Factory airbox is retained for ultimate Intake air heat shielding High flow silicone hose replaces restrictive factory tube Utilizes proprietary S-FLO Filter OE Style locking rib on inlet of silicone hose for a secure connection Significant power gains while retaining desired sound Aftermarket intakes with open air filters suck in the heat from the engine bay, which can kill power gains generated by a freer flowing filter. By retaining the factory airbox and ducting on the AWE Tuning S-FLO Intake, we are able to provide the needed barrier against the hot engine bay air, while producing a stealth appearance -- all without an audible variance. We replace the restrictive factory hose with the AWE Tuning Nomex?? lined, steel wire reinforced silicone hose. The AWE Tuning hose is designed to have optimal flow geometry into, through and out of the tube. A molded lip is integrated where the hose mates to the airbox to ensure a proper seal. The S-FLO Filter The AWE Tuning S-FLO Intake employs the proprietary S-FLO Filter ?? the washable, large cone filter that has been independently lab tested to allow 34% more airflow than the factory paper filter. The filter is oiled (as opposed to paper) to help facilitate the more aggressive air flow. The AWE Tuning S-FLO Filter is the largest possible filter that can fit within the airbox. We chose an oiled filter because they, by design, flow more than the paper equivalent. Note: Recommended cleaning intervals for the filter is 10k miles or once a year, which ever comes first.