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friction loss
Subaru 13-20 WRX
A true mitered merge is used to maximize scavenging and evenly distribute exhaust gases thru the muffler reducing un-wanted backpressure
This OEM Clutch Slave Cylinder is built specifically for Subaru WRX & Forester XT models
Perrin - Subaru 08-14 WRX/STI - Air Oil Separator (Neon Yellow) subaru-sti-2008 friction lossOVERVIEW The PERRIN Air Oil Separator traps oil from the crankcase vents before it enters the intake, reduces carbon build up, increases intercooler efficiency, which reduces the chance of performance robbing detonation. NO TUNING REQUIRED Increase horsepower and torque without ECU recalibration or tune! This part is designed and tested to work safely on your vehicle without any tuning required! However, more power can be gained with proper ECU
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