The firm’s development prototype is fitted with a state-of-the-art supercharger and some other goodies and develops more than double the power it left the factory with. The recipe starts with a HKS 2.1-litre stroker kit for a more stout bottom end and additional swept capacity.
It is then fitted with Harrop’s TVS1320 twin-vortices supercharger, with a manifold so clean it looks like it left the factory that way. It breathes through a prototype K&N cold air induction kit and a 75mm billet throttle body.
Copious reserves of E85 fuel are fed through an upgraded fuel system. This is all managed via a Motec M150 race ECU, while the exhaust system is via Anaconda Ace headers into a 3.0-inch racing exhaust.
The result is 319kW and 455Nm of torque, in something weighing around 1200kg. The resultant power-to-weight ratio is 3.7kg/kW. For reference the latest Porsche 911 Turbo S has a power to weight of 4.11kg/kW. This is quite a significant upgrade from the 149kW and anaemic 205Nm the 86 left the factory with.
For more information, head over to the Harrop Engineering website. Prices for the supercharged kit without the increased engine capacity start from $7975.