Biturbo is the same as "Sequential Twin Turbo"
Basically, you have 1 smaller turbo for lower RPM range, and a larger turbo for higher range. It helps greatly reduce turbo lag due to the smaller turbo can produce boost much earlier than a super single or twin turbo setup can do. At lower RPM, the smaller turbo spools and produces boost - then when you reach a preset RPM or boost level, a staging valve opens and directs air to turbo 2 (large one) and it now produces the boost for the engine. Usually, stage one turbo is turned off, or its boost is sent into the compressor intake of the stage 2 turbo to achieve a higher output pressure.
Do not confuse Biturbo / Sequential Twin Turbo with "Twin Turbo".
Twin turbo is having two EQUAL size turbo's. Each runs off its own cylinder bank in V or H type (boxer) engines, or off of a turbo manifold on inline type engines. Both turbos share the load equally in producing boost air. (Like a dual core processor in your PC - both run at same speed, sharing the load equally) So, turbo lag still effects this type of setup, as both turbos will spool at the same time.
Suzuki Hayabuza Biturbo
V12 Biturbo 604 hp 738 lb ft tq... 0-60 in 4.2 seconds. Yep.. it's a rocket.
There are a few different engines available for various prices in the Mercedes Benz S65 AMG luxury sports sedan. There is a clean diesel engine, a hybrid engine, and a biturbo engine.
(( "FASTEST" as in km/h )) BRABUS E V12 Biturbo (640 hp) 0 - 100km = 4.5s 0 - 200km = 11.7s Top Speed = 350.2km/h Price = 298,000 Euros (( "FASTEST" as in 0-100 )) Cadillac CST-V (beats BMW M5) 0-100km = 3.9s
Here are the approximate 2010 prices in US dollars of the production models :Quattroporte (nee 3200 GT/Shamal sedan) : $120,000 to $135,000Gran Turismo (nee Coupe/Spyder) : $118,000 to $136,000You can get a used 2005 model for around $30,000 to $40, 000 USD. A used boxy Biturbo (1981-1994) would cost considerably less. Other models include the Shamal sportster (1989-1995) and the Ghibli II (1992-1997).(see related questions)
its the Brabus E v12 based on the 2012 E Class, has a biturbo engine and does 218mph that is 350km/h approx. :)