Changes included Zytek fuel injection and appearance modifications. There was also a special version for the German market, the "Turbo R Sport", which featured the Continental T's sporty alloys and carbon-fibre, rather than walnut, panels inside. Turbo S In 1995, the Bentley Turbo S was announced as a strictly limited model, with envisaged production as fewer than 100 units. Effectively a stop-gap model before the introduction of the Bentley Arnage, just 60 units were produced making it the rarest of the Bentley SZ Series of cars, distributed across selected European, Middle Eastern and Asian markets and customers only. The engine termed a Blackpool version used Bosch Motronic fuel injection and digital ignition derived from Formula 1 technology, and with a larger exhaust driven Garrett AirResearch turbocharger with intercooler. It had a power output of . The Blackpool engine was also fitted to twelve Bentley Continental S, and to three special build Rolls-Royce Silver Spirit S. The car was fitted with a viscous differential, and with both new 255/55WR17 tyres and traction control fitted, permitted a top speed of . In 1996 production of the short wheelbase Turbo R ended, leaving only the model hitherto sold as the Turbo RL - now known simply as the Turbo R. For 1998, the Turbo R was replaced by the sportier yet Turbo RT. Turbo RT The Bentley Turbo RT was the last and most expensive of the Turbo R line. The Bentley RT came with a version of the 6.75 L V8 engine, as used in the Continental T, which is boosted by a single Garrett AiResearch T04 turbocharger and has a Zytek EMS3 engine management system. This was developed using Formula 1 racing technology, differing from earlier models with the 'Motronic' system. The RT is visually differentiated from other Bentley Turbo R models by its sport wheels, radiator mesh grille and colour-coded bumpers with bright mesh inserts. Performance was sufficient: with a top speed limited to , the ultra-luxurious Turbo RT was as fast as the sporting German luxury saloons of the time. The car's base price was US$211,600, or roughly US$65,000 more than the Turbo R. The Turbo RT was produced during 1997 and 1998 only, with 252 units produced. It was essentially a "runout special", an effort to sell off the last SZ-style bodies before the introduction of the Arnage. A few even rarer editions of the RT were made: