Chipwerke piggyback chip tuning system for Audi S4 & S5 3.0L TFSI (2009-2016) - get up to 33% more HP & TQ Get up to 33% more HP & TQ, or increase fuel economy up to 15% Custom programmed specifically for your Audi, we don't use one size fits all maps Easy plug-&-play installation takes 5 minutes, no wires to cut! OEM plugs for a high quality harness and perfect fit Completely undetectably by dealerships, wont void your warranty!