Perrin 08-13 Subaru WRX / 05-09 Legacy GT Blue Turbo Inlet Hose Jump Starters because the factory diverter has

because the factory diverter has a long stroke and weak return spring

the angle of the exhaust flow merge is also not ideal

Compared to the lower cost Stage1 the JB4 system adds OBDII CANbus for increased performance mapping

What resulted is a completely re-engineered main bearing set that eliminates oil leakage and increases oil flow to the rod bearings

and look good doing it

Perrin 08-13 Subaru WRX / 05-09 Legacy GT Blue Turbo Inlet Hose Jump Starters because the factory diverter hasPerrin 08 13 Subaru WRX 05 09 Legacy GT Blue Turbo Inlet Hose This Part Fits: Year Make Model Submodel 2009 Subaru Forester XT 2009 2010 Subaru Forester XT Limited 2010 2012 Subaru Forester XT Premium 2011 2012 Subaru Forester XT Touring