S4 turbos are NOT Staged. They are equal size, allocated at each bank of the cylinder and spin simutaniously(spin at the same). Just to let you know.....
S4 is a very capable car....only draw backs I can think of is small interior space and vogue shifter, and maybe dated(though I still think it looks nice )exterior....
S4, as well as A4, is very reliable car, though earlier production models have problem with TBB which may torn after some aggressive driving.....
Andy Kuo
------------------ Mercedes-Benz 400SE Pearl Grey/Black
Fastest car I've driven, less fun than an M3, but a lot more comfortable and safer (for amateurs like me) to drive fast. Little bit lacking in communication, brakes are touchy, shifter is long (shortshift is a must), and too expensive, but it's gorgeous inside and out, a blast to drive fast, luxurious to drive slow, and very reliable, save maybe the turbos. If I could afford it I'd get one.
Community dedicated to Lexus IS Enthusiasts. Come in and enjoy our articles, galleries and information on aftermarket parts for the IS300, IS250, IS350.