Gemballa presented an aftermarket exhaust system for the Porsche 911 Turbo that has a larger diameter and electrical control valves.
The tailpipes have a diameter of 90 mm, with the company saying that their exhaust system increases the horsepower by 20 hp, after some reprogramming of the ECU, while without reprogramming of the ECU it adds 10 hp to the supercar. Its cost is $4,250, excluding VAT.
