When It comes to getting more power out of a naturallyaspirated vehicle, the most effective method is by forced induction, in the form of a turbo or supercharger. While a turbo is powered by spent exhaust gasses, a supercharger is mechanical and uses a crank-driven belt to create its boost.
There are two basic types of supercharger: positive displacement – the roots, twin-screw and g-ladder setups that are mounted on top of large capacity engines; and centrifugal units, which resemble and work on the same principal as a turbo. These are by far the most popular option for aftermarket tuners as they are a highly efficient and cost-effective way to increase power on engines of any size.
TTS Performance is the UK distributor for Rotrex, the market leader in centrifugal superchargers. They produce their own British-engineered packages for a range of cars and bikes, as well as stocking the full range of Rotrex supercharger products.
A centrifugal supercharger delivers increased pressure with an increase in engine speed. It accelerates the inlet air by giving it a very high speed from the compressor wheel – known as an impeller. This speed energy is then exchanged to pressure when the air is slowed in the diffuser inside the compressor housing.
Compared with a positive displacement supercharger (think big blowers on V8 muscle cars), a centrifugal unit requires far less power to drive, so less bhp is lost running it from the crank. It also delivers power throughout the rev range, and doesn’t run out of puff at around 3000rpm like the big guys. Due to its compact size, a centrifugal ‘charger is much easier to package, which means it can be used on a wider variety of engines – even little 1.0-litre units.
TTS Performance produce Rotrex supercharger packages for some of the most popular cars to tune, including the Honda Civic Type R (EP/FN), Honda S2000 and Toyota GT86/Subaru BRZ, as well as some higher end stuff such as the Ariel Atom, Lotus Elise/Exige, Audi RS4 (B7), Audi S5 (B8) and Audi 8 4.2 V8. Power gains can be huge, with the Honda kits making up to 500bhp, the Audi RS4 kits making over 600bhp, and the twin-supercharged R8 delivering 700+bhp. However, more modest packages are also available for vehicles such as the Suzuki Swift, Peugeot 107, Toyota Yaris and Citroen C1.
Top Contact TTS Performance – www.tts-performance.co.uk