To limit power, all forced induction cars were fitted with a 34 mm diameter air restrictor before the turbocharger inlet, limiting the air flow to about 10 cubic meters per minute. The restriction was intended to limit power output to 300 hp although some WRC engines were believed to produce around 330–340 hp. Engine development did not focus on peak power output but towards producing a very wide powerband (or power curve). Typically, power output in excess of 300 hp was available from 3000 rpm to the 7500 rpm maximum, with a peak of 330–340 hp at around 5500 rpm. At 2000 rpm (the engine idle speed in "stage" mode) power output was slightly above 200 hp.
While nowadays we are used to rally cars being visually close relatives to hot hatchbacks and saloons, it wasn’t always this way. The Lancia Stratos was the first car purpose built for the World Rally Championship; however, its rakish supercar looks and Ferrari-sourced V6 suggested it was better suited to the car park outside Monte Carlo’s casino than the world’s toughest rally stages.
In many rallies, including those of the World Rally Championship (WRC), drivers are allowed to run on the stages of the course before competition and create their own pacenotes. This process is called reconnaissance or recce. During reconnaissance, the co-driver writes down shorthand notes (the pacenotes) on how to best drive the stage. Usually the drivers call out the turns and road conditions for the co-drivers to write down. These pacenotes are read aloud through an internal intercom system during the actual race, allowing the driver to anticipate the upcoming terrain and thus take the course as fast as possible.
In the past, most rally courses were not allowed to be scanned prior to the race, and the co-drivers used only maps supplied by the organization. The exact route of the rally often remained secret until race day. Modern rallies have mostly converted to using organizer-supplied notes or allowing full reconnaissance, as opposed to racing the stages blindly. This change has been brought on in large part due to competitor demand.
Pacenotes are a unique and major tool in modern rallying. Television spectators will occasionally notice the voice of a co-driver in mid-race reading the pacenotes over the car's internal intercom. These pacenotes provide a detailed description of the course and allow the driver to predict conditions ahead and prepare for various course conditions such as turns and jumps.
Colin McRae began his competitive career in motorsport riding trial bikes at an early age, despite being more interested in four wheeled machines rather than two wheel bikes. At the age of sixteen, through the Coltness Car Club, McRae discovered autotesting, he soon traded his bike for a Mini Cooper and started competing. A year later, he began to negotiate with another club member to use his Hillman Avenger for the Kames Stages, a single-staged rally venue not far from McRae's home. McRae finished the event fourteenth; first in his class although he had run most of the event in a higher position.
All-Wheel Drive cars have more traction (naturally) and can therefore attain higher speeds in a shorter space, but require very precise driving to extract the most from them. Rear-Wheel Drive is quite challenging, requiring a lot of throttle control and very smooth inputs. It’s incredibly fun and sideways, and the ability to successfully handle a Rear-Wheel Drive car through slippery rally conditions is quite rewarding. Both are incredibly fun, and will increase your driving ability and car control beyond what’s possible on a track.
The 959 was one of the most technically advanced road cars of its time, variable torque-split all-wheel drive, tire-pressure monitoring, and a twin-turbo flat-six making over 400 horsepower. Porsche decided to show off the car's capabilities not by taking it racing, but by taking it rallying at the Paris-Dakar. This Rothmans-liveried legend is what resulted.
This particular era was not to last. On the 1986 Rallye de Portugal, four spectators were killed; then in May, on the Tour de Corse, Henri Toivonen went over the edge of a mountain road and was incinerated in the fireball that followed. FISA immediately changed the rules again: rallying after 1987 would be in Group A cars, closer to the production model. One notably successful car during this period was the Lancia Delta Integrale, dominating world rallying during 1987, 1988, 1989, 1990, 1991 and 1992 – winning six consecutive world rally championships, a feat yet unbeaten.