K&N Replacement Air Filter AUDI RS6, 4.2L-V8 (TWIN TURBO); 2002-2003 (2 FILTERS REQUIRED) VTEC Conversion Perrin 07-14 STi Boost Control

Perrin 07-14 STi Boost Control Solenoid Cover - Red

the same sort of benefits can be seen by adding a similar bellmouth (in this case a velocity stack) to the end of your cold air intake

but two air intake tubes

Replace corroded or damaged OE toe cam bolts on the rear ofthe 2000 to 2009 Subaru Legacy

Fuel surge tank compatible with Ti Automotive E5LM brushless fuel pumps (BKS1000)

K&N Replacement Air Filter AUDI RS6, 4.2L-V8 (TWIN TURBO); 2002-2003 (2 FILTERS REQUIRED) VTEC Conversion Perrin 07-14 STi Boost ControlK&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace