The Swiss tuner says that after the conversion, the 0-100 km/h (62mph) sprint time for the Audi TT RS falls from 4.6 to 4.2 seconds while the company claims that in-gear acceleration times are "greatly improved". The Stage One package also includes the removal of the factory 250km/h or 155mph top speed limiter.
The kit is priced in the UK at £1,200 fitted (including VAT) and is covered by a guarantee - though APS did not disclose details on the time period.
The firm also revealed that a full program of additional complimentary performance, dynamic and styling upgrades for the Audi TT RS are currently under development with more details to be released at a later stage. For the record, the pictures below are of the factory TT RS.