Austrian tuner O.CT Tuning recently took to improving the performance of the turbocharged hatch, lifting output to 328hp, while also giving it a sportier look as well.
The top level O.CT-engine package boosts the output of the sporty compact to 328hp and 425Nm (313lb-ft) of torque. Some of the modifications include a high-flow catalytic converter developed by HJS, a sports exhaust with an adjustable butterfly valve, as well as a new air intake and intercooler.
With the extra power onboard, the tuned S3 accelerates from 0-100km/h in just 5.7 seconds and reaches a top speed of 265km/h.
Source: Motor Authority