Cobb Post MAF Hose - Stealth Black - 2002-2007 Subaru WRX / 2004-2008 Forester XT PDM_air-fuel-ratio-gauges Building a high-output EJ257 STI

Building a high-output EJ257 STI requires careful selection of clutch components because the torque at peak boost can easily exceed what a standard single cerametallic disc manages reliably

Over bumps in corners -- which is when you most want the rear wheels tracking precisely -- bump steer causes the rear to step out or tuck in unexpectedly

OEM quality from the OEM supplier

That way you don't have to perform extra modifications or alterations to make for a great fitment

Cobb Post MAF Hose - Stealth Black - 2002-2007 Subaru WRX / 2004-2008 Forester XT PDM_air-fuel-ratio-gauges Building a high-output EJ257 STICobb Post MAF Hose Stealth Black 2002 2007 Subaru WRX STI The Cobb Cobb Post MAF Hose is a black silicone hose replacing the factory rubber post MAF hose for the 2002 2007 Subaru WRX. The silicone replacement hose provides improved durability over the factory rubber component silicone maintains its flexibility and seal integrity across a wider temperature range and resists oil contamination better than rubber. DETAILS Platform: 2002 2007 Subaru WRX