Took a class yesterday on the new engines coming out for the 07 model year for GM vehicles. The 2 seater pontiac solstice and the saturn roadster looked pretty advanced. 4 cylinder engine 2.0L or 2.2L engine, Can't remember exactly which one but it is turbo charged and intercooled. Rated at 270 HP and I think 270 ft lbs Tq. Fuel injectors are mounted directly into the cylinders so fuel pressure was raised from 60 psi to a max of 2176 psi!!! Has a secondary fuel pump that drives off the cam to increase the pressure to the max of 2176 psi. Twin scroll turbo charger, has a split section in the exhaust inlet that mates with the exhaust manifold for cylinders 1/4 and 2/3. they said this prevents exhaust pulses that effect turbo performance. I will try to remember to bring the papers home so I can post them.