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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.

BMW offers M Performance Power Kit for 2012 335i sedan

BMW has let loose a new M Performance Power Kit for its F30-generation 335i and 335i xDrive sedans. Starting at $1,100 for the kit - installation is extra - your car will be fitted with a new ECU and air intake on the functional side and an M Performance engine cover and rocker panel stickers on the decorative side. The Power Kit raises the 3.0-liter inline six-cylinder's horsepower rating from 300 to 320, and on automatic models, torque gets a boost from 300 pound-feet to 332 lb-ft - manual transmission models get a smaller bump to 317 lb-ft.
According to the Bavarian automaker, you'll be able to hear the change in the overrun exhaust note, and 0-60 mile-per-hour times drop by 0.2 seconds. The package is available now at all BMW Centers in the US, and if you get it installed when you purchase the car new, it will get the same four-year, 50,000-mile warranty as the vehicle. Have it done after the fact and the kit will be warranted for two years and unlimited miles. There's a press release below with some more details.

2017 BMW i3 rumored to get more electric range

BMW will reportedly give the 2017 i3 a jolt of extra range that will increase the EV's max driving distance to around 120 miles. If true, that would be quite a boost from the current EPA-estimated 81 miles. An upgraded lithium-ion battery will make this improvement possible, according to Automotive News. Ian Robertson, BMW's boss for sales and marketing, told AN the upgrade to the i3 "puts it into a much more usable range." The company has more tweaks in store for the 2017 model but doesn't want to discuss details about them yet. Rumors late last year hinted that the extra range for the i3 would come thanks to a higher-density battery, improved electronics, and new software. The changes could push range to over 124 miles on the European testing cycle. BMW would also offer the improvements on the i3 REx range-extended model, and the company would even allegedly allow current owners to purchase the upgrades. The German automaker wants to offer these updates every three years to keep the EV fresh. If BMW can achieve 120 miles of range, then the electric i3's driving distance would come significantly closer to the current REx's EPA-estimated 150 miles. Of course, the range-extended model can always be topped up with a tank of gas to keep its wheels spinning further. The i3's rumored boost would also still put it short of the roughly 200 miles that Chevrolet promises from the Bolt when that model arrives late this year. In any case, it's an exciting time for proponents of electric cars. Related Video: