As delivered by the factory, Audi's S5 Cabriolet makes for a charismatic convertible. Although lacking the V-8 grunt of its fixed-roof sibling, it offers an enticing combination of power and style, yet is comfortable and benign enough to use as a daily driver. Is there any way to improve upon Ingolstadt's invention?Moteren Technik Meyer, or MTM, certainly thinks so. The heralded German tuning firm feels a few subtle tweaks can turn Audi's shapely roadster from mild to wild.Arguably, the most significant modification lurks within the electrical system. MTM's M-Cantronic engine controller contains the recalibrated engine computer mapping that allow drivers to explorer new frontiers with Audi's supercharged 3.0-liter V-6.In stock form, the 3.0T engine produces a commendable 333 horsepower between 5500-7000 rpm, and 325 pound-feet of torque at 2900-5300 rpm. Install MTM's tuning module and a new exhaust system, and those figures jump to an impressive 430 horsepower and 379 pound feet
MTM Audi S5 Cabriolet
MTM Audi S5 Cabriolet
MTM Audi S5 Cabriolet
The modifications are mild, perhaps, but it still takes both skill and finesse to implement them in a seamless fashion. MTM's execution is flawless; everything looks, feels, and functions as if it were engineered by Audi itself. Cars equipped with Audi's Drive Select controller, for instance, still retain their variable settings; MTM's 430 horsepower is only fully unleashed once the driver selects the sport setting.Full review here.. 
