Rotomaster New Exhaust Adapters are a great upgrade to the factory-installed adapters that come equipped with an exhaust back pressure valve (EBPV). The stock valves have a tendency to stick from soot build up or a faulty electrical signal and can cause exhaust obstructions. This raises the exhaust gas temperature and can also cause a loss of response from the turbocharger. Rotomaster Exhaust Adapters are a direct O.E. replacement that removes the factory EBPV and provides a smooth exit for the exhaust gases to pass through the turbine wheel. Manufactured using O.E.-grade material, these adapters will reduce restrictions and prolong turbocharger life.