We were very pleased with the ARK Design lineup. All of the exhausts had excellent quality fit and finish, especially compared to other established brands of exhausts whose aesthetics have suffered due to relentless cost cutting. The ARK Design exhausts were also some of the most powerful for the FR-S/BRZ twins we have tested to date. Surprisingly, they are also among the quietest. From the slightly louder than stock Road Spec, to the throaty but not obnoxious Super Flow, to the still decently quiet Race Spec we were surprised how good these exhausts sounded.
The exhausts all performed identically on a stock car so we are going to re test them on our header equipped, Innovate Motorsports supercharged Project FR-S in the near future. We think that the additional flow demands of the supercharger will start to differentiate the different ARK Design exhausts.