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The ECV2 was a further development of the theme, with an all new bodywork which was aerodynamically optimised, the major change being the relocation of the engine coolant and lubricant radiators to the front of the car. The body construction continued the theme of the ECV1, using aluminium honeycomb, carbon fibre, glass fibre and kevlar in various positions. The weight distribution was also improved with respect to the previous model.
The engine remained 1759cc with two turbochargers using the triflux system. The intercoolers also adopted water cooling. The drive system remained essentially as in the S4, with some improvements, a three-differential design with 30% of the torque at the front and the remaining 70% at the rear.
Ventilated disc brakes, power assisted steering and double wishbone suspension all round were also used.
The wheelbase was 2440mm, the tracks (front/rear) 1500mm/1520mm and kerb weight 910kg.
Triflux Engine
The 1800 power unit of the ECV1 & 2 was known as the triflux. This was due to the design which had one exhaust and one inlet valve on each side of the cylinder head, with the resulting twin exhaust manifolds each feeding one turbocharger. At low engine speeds one turbocharger exhaust was shut-off, forcing all the exhaust gases through one unit and thus providing good low speed performance. As the engine speed rose, the second turbocharger was gradually introduced, until at high engine speeds both turbochargers ran in parallel.
