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right to the OE downpipe (or any downpipe made to mate to the factory exhaust)
A specially developed 3-angle velocity stack smoothes the airflow transition from the air filter to the rotomolded intake tube
The headers with high-flow cats show a 28-33whp gain
This side-mounted kit is designed to fit lifted trucks
GrimmSpeed Air Oil Separator Red - Subaru 08-14 WRX/ 05-09 LGT/09-13 FXT (078016R) _(piggy_Back_Style)_Water_Pump_And_Alternator_Pulleys_(3) right to the OE downpipeAn Air Oil Separator has one job, remove the oil from the engine ventilation system so the oil does not get sent through the intake system. The GrimmSpeed Air Oil Separator for Subaru vehicles has a unique design that allows you to maintain your PCV Valve while separating the oil out of the crankcase and head ventilation air! Our AOS will allow your engine to run more efficiently due to the separation of oil from the intake system. When there is oil