1986 Porsche 944 Turbo on 2040-cars

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Is the skill of rev matching being lost to computers?

If the ability to drive a vehicle equipped with a manual gearbox is becoming a lost art, then the skill of being able to match revs on downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. The usefulness of rev matching in street driving is limited most of the time – aside from sounding cool and impressing your friends. But out on a race track or the occasional fast, windy road, its benefits are abundantly clear. While in motion, the engine speed and wheel speed of a vehicle with a manual transmission are kept in sync when the clutch is engaged (i.e. when the clutch pedal is not being pressed down). However, when changing gear, that mechanical link is severed briefly, and the synchronization between the motor and wheels is broken. When upshifting during acceleration, this isn't much of an issue, as there's typically not a huge disparity between engine speed and wheel speed as a car accelerates. Rev-matching downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. But when slowing down and downshifting – as you might do when approaching a corner at a high rate of speed – that gap of time caused by the disengagement of the clutch from the engine causes the revs to drop. Without bringing up the revs somehow to help the engine speed match the wheel speed in the gear you're about to use, you'll typically get a sudden jolt when re-engaging the clutch as physics brings everything back into sync. That jolt can be a big problem when you're moving along swiftly, causing instability or even a loss of traction, particularly in rear-wheel-drive cars. So the point of rev matching is to blip the throttle simultaneously as you downshift gears in order to bring the engine speed to a closer match with the wheel speed before you re-engage the clutch in that lower gear, in turn providing a much smoother downshift. When braking is thrown in, you get heel-toe downshifting, which involves some dexterity to use all three pedals at the same time with just two feet – clutch in, slow the car while revving, clutch out. However, even if you're aware of heel-toe technique and the basic elements of how to perform a rev match, perfecting it to the point of making it useful can be difficult.

Watch this Koenigsegg CCX hit 211 mph on a runway, outpacing McLaren's P1

Vmax200 in in England organizes events where those who care to show up with a supercar can run them down the two-mile runway at Bruntingthorpe Proving Ground. Evo attended the latest event, bringing an impressively green Lamborghini Aventador to test its girth and gaping vents against other precious metals like the McLaren P1 and F1, Ferrari F12 Berlinetta and Enzo, a Porsche Carrera GT and enough 911 Turbos to start a dealership. Speaking of those Porsches, nine of the top ten slots in the top speed competition are claimed by modified 911 Turbos.
A monochrome Swede ruled them all, though, a black-and-white Koenigsegg CCX setting fire to the speed trap run after run, hitting 211 miles per hour at its quickest. It was followed by, surprise, a 911 GT2 modified by 9E that did 210 mph. You can watch the EVO video below, GT Spirit has a bigger breakdown of the day, and we've included another vid showing the tandem launch of the CCX and McLaren F1.

Porsche reveals new LMP1 racecar testing ahead of 2014 Le Mans debut

Getting ready for its triumphant return to the premier racing class of Le Mans, Porsche has released a handful of images showing its new LMP1 racecar testing. Porsche hasn't run a car in the Prototype class at 24 Hours of Le Mans since 2009, but this racecar - still veiled in secrecy - will be expected to battle against the Audi and Toyota LMP1 Prototypes to help bring Porsche its 17th Le Mans victory.
Aside from knowing that it will use a hybrid powertrain to meet LMP1 rules, there are no other details about the car... including its name or potential sponsors. In the meantime, Porsche has set up a microsite, called Mission 2014, to share its extensive history racing at Le Mans. Also, be sure to check out some of the past videos Porsche has released as it gears up for its reborn LMP1 program.