If you drive a second-generation Subaru WRX or STI, you know that the sedan and hatchback versions of these cars have distinct exhaust system designs to accommodate the cars’ different dimensions.

The Subaru WRX STI was a higher-performance version of the ... A custom Inconel (a high-strength, lightweight nickel-chrome-iron alloy) exhaust system had to be fabricated. This was needed because ...

Three years ago, Subaru disappointed the performance car world when it announced that the STI badge would not be coming to the current generation of WRX. The Impreza-based performance sedan has ...