Scion's lightweight, rear-wheel-drive FR-S only left us with a small list of wants after we gave it and the nearly identical Subaru BRZ our most prestigious Best of 2013 Award. At the top of the list is more power, but that of course hasn't happened yet. The twins' weak aural experience from under the hood and the exhaust is thankfully a much easier and less-expensive issue to address than squeezing another 40-50 horsepower from under the hood.
A 2014 Scion FR-S we recently tested equipped with Toyota Racing Development's performance exhaust system hit a home run in the area of the ear-pleasing notes. That's important because we always thought there was something lacking from the FR-S' factory equipment.
A sound tube designed to make the engine more audible inside the cabin was not the robust sound I wanted to hear more of; the noises out back were more pleasant and less audible. TRD's exhaust adds a whole new layer of fun to the already entertaining FR-S.