Here you can see how a divided or twin-scroll turbocharger has two separate exhaust gas entry paths into and through the turbine, maintaining the improved scavenging effect and exhaust gas flow achieved by pairing complementary exhaust primaries on the header.





Two finely crafted, equal-length manifolds from Full-Race, where the divided flange fed by paired primaries clearly differentiates the twin-scroll design (left) from the single-scroll design (right).