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The 3-inch mandrel-bent SUS304 stainless construction provides a genuine improvement in exhaust flow over the factory system — this is not a tone-only upgrade
K&N drop-in replacement filters are designed to install easily into your factory air box
With all types of forced induction being added to the FR-S/86/BRZ
They are made from 3/16th inch steel making the welds stronger and more durable
accurately balanced
Verus Engineering AOS Kit - 2015-2021 Subaru WRX PDM_fuel-system-kits The 3-inch mandrel-bent SUS304 stainlessUltimately it is designed to perform the crucial task of eliminating oil from the engine's crankcase system. This is to ensure that the oil does not infiltrate the intake system, causing a decrease in octane, which can lead to a series of problems, including carbon build up, power reduction, and internal engine damage. With the aid of coalescent filters, oil vapor with a size as small as 5 microns can be effectively filtered out. Verus Engineering AOS