Originally Posted by Element Tuning

What separates our downpipe from the rest is that we chose to do something new with the divorced wastegate design. I penned this design almost 5 years ago but finding a manufacturer to produce the system with the quality we wanted proved difficult until now. Since the majority of Element Tuning customers have extensive modifications such as larger bolt-on turbochargers like the GT52 or GT49 we designed this exhaust system to exploit that by running the 3” dowpipe’s centerline on the exhaust wheel and the 2” wastegate dump tube’s centerline with the wastegate flapper valve. To do this is difficult however and required us to intersect the 3” DP with the 2” dump tube. You basically end up with almost the volume of a 5” DP and then the wastegate dump tube follows all the way down to the bottom of the exhaust system where we then angled the dump tube to create a low pressure area, therefore creating a Venturi Effect which further aids in proper wastegate flow.

The other item we altered from the norm was a divider at the turbocharger flange. The reason we did this was that we found in testing that it hurt wastegate performance since the majority of the aftermarket turbochargers swing open in a fashion that dumps wastegate exhaust directly into the divider hurting flow. This is often why “bellmouth” designs have better boost pressure control. Also by forgoing this divider, the system will work with turbochargers that have a divided exhaust housing from the factory.