These aftermarket automotive components are designed for use in specific Infiniti G37 models to modify the exhaust system. Functionally, they replace the catalytic converters found in the stock exhaust, reducing exhaust backpressure. Resonators are integrated within the design to manage and mitigate the raspiness or harshness often associated with removing catalytic converters. An example of their application would be replacing factory exhaust parts in a 2010 Infiniti G37 coupe.
The modification can lead to performance gains, such as increased horsepower and torque, due to the improved exhaust flow. Historically, enthusiasts have sought such modifications to enhance vehicle performance and sound. The inclusion of resonators addresses a common concern of increased noise levels and unpleasant sound characteristics that can arise from removing catalytic converters.