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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.

2015 Chevrolet Silverado Custom glitzes up volume model [UPDATE]

UPDATE: The original prices listed in Chevrolet's press release did include destination charging, despite not being specifically called out as such. We've edited the story to reflect this. The Chicago Auto Show's reputation as the home of special edition debuts grows stronger today, as Chevrolet is complementing the news that it'd unveil the Silverado Midnight Edtion and Colorado GearOn special editions in the Windy City with the debut of the Silverado Custom. And yes, it's different than the higher-spec Custom Sport that debuted just last month in Detroit. What's so custom about the Silverado Custom, you ask? Well, not a whole lot. The new truck is based on the popular Silverado LS Double Cab, and adds, among its most noteworthy features, a set of 20-inch, five-spoke wheels. From there, chrome is the order of the day, with shinier front and rear bumpers, mirror caps and door handles. The top portion of the front bumper, which is finished in black plastic on the standard LS, is matched to the body color on the Custom model. Standard LS interior features, like the 4.2-inch MyLink system with 4G LTE wireless internet, 40/20/40 cloth front seats, remain in place on the Custom, while it's a similar story with the powertrain. Choices below the sheetmetal will force buyers to choose between a 5.3-liter V8 or a standard 4.3-liter V6, and two- or four-wheel drive. Chevy is pricing a V8-equipped Silverado Custom 4x2 at $33,820 (including $1,195 in destination charges). Adding four-wheel drive brings the price up at $37,800, although as we said, selecting the 4.3-liter V6 will yield a more affordable Custom. Check out the full press release on the newest member of the Silverado clan, available below. 2015 Silverado Custom: Back to Basics, with Style $33,820 starting price for a well-equipped double-cab V-8 CHICAGO – Chevrolet takes aim at the heart of the pickup market with the Silverado Custom, which offers Chevy Truck capability and dependability in a stylish package, priced within reach of many truck customers. "The economic recovery has led to booming sales of high-end pickups like the Silverado High Country," said Sandor Piszar, marketing director for Chevy Trucks. "But there are also millions of customers in the heart of the market who want a great looking, well-equipped truck at an affordable price.

2016 Chevy Volt will have more EV range, bigger battery

Meet the new Volt, not the same as the old Volt. That appears to be the story when General Motors introduces the 2016 Chevy Volt at the Detroit Auto Show in January. Today we're getting some more details on the guts of the new plug-in hybrid, and it turns out they're going to be much improved from the current Volt, which first went on sale at the end of 2010. Sure, the first-gen Volt did get some improvements along the way (a slightly larger battery pack, lane departure warnings) but the new Volt – which will go on sale in the second half of 2015 – marks the first time GM has been able to return to the drawing board and really make the improvements that its customers want. That's how Larry Nitz, GM's executive director of vehicle electrification explained it to AutoblogGreen today when explaining the all-new Voltec extended range electric vehicle (EREV) powertrain. "In the Gen 2 is we gave the engine a little more power, a little more torque, a little more displacement, more capability." – Larry Nitz Nitz said that the new Volt will be better in almost every sense: a bigger battery, longer EV-only range, 20 percent better acceleration in the low speed range and higher overall efficiency. This is due, in part, to the Volt's two motors being able to both act as generators and power the car. As we noted this morning, the 2016 Volt will use a larger, 1.5-liter four-cylinder engine, a version of which is already used in the Chinese-market Cruze. Nitz said that this has a number of benefits, including more power and quieter operation. "Some people would say, why did you make [the first-gen engine] so big. I would say, why did you make it so small?" he said. "It works good, our customers love it, but the reality is that if you go a little bit off and use the car a little harder, you can get the engine to need to operate at a higher speed. In an EV, that's quite noticeable. So, what we did in the Gen 2 is we gave the engine a little more power, a little more torque, a little more displacement, more capability and what it has marginally enabled is not only is it more efficient but it's also quieter." Nitz wouldn't talk about how the new powertrain might affect the two other products that use the Volt's underpinnings – the Cadillac ELR and the Opel Ampera – but if you've got a quieter option, we assume that's something ELR drivers would enjoy. But that's a story for another day.