aFe Momentum Intake Replacement Air Filter w/ Pro DRY S Media (21-90088) 1847 5" diameter stainless steel piping

5" diameter stainless steel piping for enhanced exhaust evacuation

This is the ultimate intake upgrade for the Audi S4 and S5 (B9)

VIAIR 444C Air Compressor

For use with OE Intercooler

adjustable EFI regulator designed for medium to high horsepower applications

aFe Momentum Intake Replacement Air Filter w/ Pro DRY S Media (21-90088) 1847 5" diameter stainless steel pipingMagnum Flow Pro Dry S Oval Tapered Gray Air Filter (21 90088) by aFe. This high flow Pro DRY S air filters are constructed with 100% polyurethane on all sides and will out flow the stock paper filters for improved performance. With three layers of progressively finer mesh synthetic media between 100% polyurethane top and base, this high flow, "oil free" conical performance filter provides maximum convenience and easy maintenance with excellent