2006 Bmw M5, Carbon Fiber Rs Racing Exhaust, Vis Racing Cf Hood, Yolo Chip, K&n 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.

2016 BMW 330e Plug-In Hybrid First Drive

Piecing together the i8 eco sports car taught BMW some valuable lessons, some of which you'll see in the next generation or two of the company's electrified mainstream cars. You won't have to wait that long for BMW to deliver on the key lesson, which can be seen right here in the 330e: make hybrids fun to drive and don't make people compromise on what they like. The 330e neatly sidesteps the traditional character-blanching entry ticket you get with hybrids by delivering almost as much torque as the 340i and a sprint time to 62 miles per hour of 6.1 seconds. For most people eco-conscious enough (especially in a time of cheap gas) to bother with plug-in hybrids, that's going to be quick enough. And so is the 140-mph top speed. It won't quite manage the precision of a normal 3 Series because it's 353 pounds heavier, but it's not far away. This 330e is (theoretically) capable of delivering 25 miles of electric-car range or ridiculous amount of range as a gasoline-electric hybrid. It will post a 44-gram CO2 emissions figure and officially deliver 1.9 liters/100km on the NEDC test cycle in Europe, which translates to 124 miles per gallon equivalent in the US, though it's unclear what the EPA-certified number would actually be. While punching in a straight line is always good, and sipping fuel like it's being rationed is nice, the key part to the 330e is that still handles like a 3 Series should every time you arrive at that one fun corner. It won't quite manage the precision of a normal 3 Series because it's 353 pounds heavier, but it's not far off. BMW has buried the 7.6-kWh lithium-ion battery pack beneath the cargo floor, while the electric motor resides up front, so the weight distribution moves from 50:50 to 49:51, leaving it a touch heavier in the back. Effectively, it's a 3 Series with the 320i's 2.0-liter, four-cylinder gasoline powertrain, the standard eight-speed automatic transmission, and an electric motor sandwiched in between to create a hybrid. The electric motor adds 87 hp to the gas engine's 181 horsepower to offer 248 hp of total power (yes, we know they don't directly add up, but that's the total output). While it has 74 pound-feet of continuous torque, the electric motor can overboost to 184 lb-ft when it needs to. Add that to the gas engine's 214 lb-ft and the car has a maximum of 310 lb-ft – 22 lb-ft shy of the 340i, without pumping out as many emissions.

2014 BMW M6 Gran Coupe is ready for your favorite roads

We've known about the ins and outs of the lovely BMW M6 Gran Coupe for a while now, but that doesn't mean we weren't happy to see the thing in the metal for the first time, here in Detroit.
The M-tuned Gran Coupe utilizes the same 4.4-liter forced-induction V8 that powers both the BMW M6 and the M5, with an output of 560 horsepower and 500 pound-feet of torque. The fast four-door brings up 60 miles per hour in just 4.1-seconds - the same sprint time as the M6 coupe and a few tenths quicker than the M5 - and up to a limited top speed of 155 mph.
We love those performance figures - this is one new Bimmer that we're amped to get some seat time in - though we're not super crazy about the selection of chrome wheels on this particular show car. Tells us what you think about the hotted up Gran Coupe in comments, below.