The IAG Performance Map Sensor Adapter enables you to go beyond the limits of 23 psi with your Subaru. The OEM map sensor is limited to 23 psi and if you want to exceed that pressure, you are required to install an aftermarket MAP sensor. Our adapter Features 1/8" NPT female threads, which permits the use of various MAP sensors. We frequently use the AEM 3.5 bar sensor. Our map sensor adapter is engineered and manufactured in our facility in Westminster, Maryland. Each product is machined from a single piece of 6061 billet aluminum and then anodized black for a protective finish. Each adapter features our engraved piston logo.This Part Fits: Year Make Model Submodel Notes 2006 Subaru Forester XT Limited 2007 Subaru Forester XT Limited 2002 Subaru Impreza WRX 2003 Subaru Impreza WRX 2004 Subaru Impreza WRX 2005 Subaru Impreza WRX 2006 Subaru Impreza WRX 2007 Subaru Impreza WRX 2004 Subaru Impreza WRX STI 2005 Subaru Impreza WRX STI 2006 Subaru Impreza WRX STI 2007 Subaru Impreza WRX STI 2008 Subaru Impreza WRX STI 2009 Subaru Impreza WRX STI 2010 Subaru Impreza WRX STI 2011 Subaru Impreza WRX STI 2012 Subaru Impreza WRX STI 2013 Subaru Impreza WRX STI 2014 Subaru Impreza WRX STI 2015 Subaru WRX STI 2016 Subaru WRX STI 2017 Subaru WRX STI 2018 Subaru WRX STI 2019 Subaru WRX STI 2020 Subaru WRX STI 2021 Subaru WRX STI