The Turbo back exhaust system is designed as an aftermarket upgrade for vehicles with a turbocharger. They typically remove the stock catalytic converter. These systems will yield a great increase in horsepower and torque by sacrificing a barely noticeable amount of midrange power.
More on Turbo Back Exhaust Systems from OC Diesel
The Turbo back exhaust system is a part of the exhaust system which extends from the turbocharger's outlet to open air, these turbo back exhaust systems include a downpipe which connects to the turbo to produce more peak power.