"BMW 2002 ti was top-of-the-line in its model-range. But the Alpina 2002 was considerable faster, with its 165 bhp engine. On the Vallelunga race track it was one second faster than the Lamborghini Miura, and whole five seconds faster than Porsche 911s. Alpina now had a very good reputation all over the world.
And in 1973 the Alpina 2002 tii was available as a complete and fully-developed car.
This car had equal performance with the 2002 turbo, but the Alpina were considerably more comfortable and enjoyable to drive than the turbo. There was no turbo-lag, which were a big problem in the 2002 turbo, and its fuel consumption was much lower."
Kilde: http://www.m5board.com/alpina/earlycar.html