I own a '94 vectra turbo and it's a little modified
engineblock overbored (2.1L), low compression pistons, oilspraynozzles under the pistons, steel conrods, bigger intercooler, KKK K16/26 hybrid turbocharger, fuelpressure 4.5 bar, other sparkplugs and other software this brings my standard specs: 204hp, 280Nm, 0-100km/h in 6.8 and topspeed of 240km/h
to the modified specs:330hp, 485Nm, 0-100km/h 4.8 and a topspeed of 295km/h (the car will probably go a little over 300km/h but I didn't go that far yet!)
next thing is bigger injectors so I can run my turbocharger to it's full potential +-380hp
greetz mando