This GrimmSpeed high-flow exhaust manifold crosspipe is custom - designed for the 2006 - 2007 Subaru WRX and 2004 - 2008 Subaru Forester XT. It's a game - changer for exhaust gas flow. The OEM pipe restricts 50% of exhaust gases, but this crosspipe overcomes that. Made from high - grade 304 stainless steel, including flanges, flex, and tubing, it features a 14 - gauge pipe wall thickness, the most heavy - duty in the aftermarket. The unique triple - layer flex joint, not in the bend, extends its lifespan. With a 1.92 - inch piping diameter, it maximizes exhaust flow from cylinders 1 and 4 to the manifold collector, ensuring faster turbo response. It's available in uncoated brushed or black ceramic coated finishes. It improves boost transition and airflow in the mid - to high - RPM range. Heavy - duty GrimmSpeed gaskets and installation hardware are included.
Using the GrimmSpeed high - flow exhaust manifold crosspipe is straightforward. First, make sure your vehicle is the 2006 - 2007 Subaru WRX or 2004 - 2008 Subaru Forester XT. Use the included heavy - duty gaskets and installation hardware for a proper fit. When installing, follow the standard exhaust system installation procedures. If you're not confident, it's a good idea to get a professional mechanic to help. As for maintenance, since it's made of 304 stainless steel, it's quite durable. But it's a good practice to check the flex joint regularly for any signs of wear or damage. You can clean the pipe with a mild stainless - steel cleaner to keep it looking good. Avoid using harsh chemicals that could damage the finish. Also, keep an eye on the boost transition and turbo response during normal driving. If you notice any changes, it might be time to have a more in - depth check.
