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'Killing a Duramax' Gale Banks YouTube series methodically tunes a diesel to death

Learning or perfecting a skill by watching YouTube videos is known as attending YouTube University. GM Authority picked up on one of the video site's more fascinating courses, hosted by Gale Banks; in a fair world, he should be referred to as Professor Banks when it comes to diesel engines and truck tuning. A few months after GM introduced the updated L5P 6.6-liter Duramax diesel V8 in the 2020 Chevrolet Silverado HD and GMC Sierra HD that ships with 454 horsepower and 910 pound-feet of torque, Banks decided he wanted to methodically tune the engine to death. The purpose of the resulting series, called "Killing a Duramax," is to push more power out of the engine in order to discover which parts break and when — or, as Banks puts it, force-feed the Duramax "until the crank hits the street and the heads hit the hood." With that knowledge, Banks can figure out all the weak points on his way to building what he calls a "Superturbo," that being a supercharged, twin-turbo race engine with more than 1,000 hp. What makes the series fascinating is Banks' knowledge, paired with the company's comprehensive iDash engine monitoring system that keeps tabs on a glut of parameters every step of the way. So for instance, you get Banks explaining the differences between inches of mercury and barometric pressure, how those are different from the water content of the air measured in grains, then showing those readouts on the iDash, then explaining in detail how they affect the air density in the Duramax system. The stock Borg-Warner variable turbo gets a lot of airtime — Banks accuses it of being "out to lunch" because he feels it's the weakest link on the engine. That turns into a turbo teardown and a deep explanation of performance pitfalls, such as when air pressure on the turbine begins to diverge from the boost pressure coming from the compressor. Banks says he can keep close tabs on where power's coming from, because the iDash monitors the horsepower contribution provided by the ambient air, the turbo, and the intercooler separately. The major changes so far are a stouter Precision 7675 turbo and TurboSmart wastegate (episode 5), a twin intake (episode 6), a custom liquid-cooled intercooler from a marine engine, a new GM oil cooler and synthetic oil (episode 10), and new injectors (episode 11).

2016 Chevy Silverado unveiled in full at Texas State Fair

It's State Fair time down in the Lonestar State, which means a lot of things to a lot of Texans: rodeos, cook-offs, country music concerts, big belt buckles, and even bigger hats. But it also means new trucks. Ford used the occasion this year to roll out its new F-Series Super Duty pickups, but the Blue Oval won't have the show all to itself as Chevy is also on hand to reveal in full its latest updates to the Silverado. The Bowtie brand gave us our first glimpse at its updated 1500-series pickup back in July, but has now revealed the revised truck in full – and not just in Z71 spec, either. Buyers will be able to choose between WT, LS, LT, LTZ, and High Country trim levels – to say nothing of the various cab, box, and powertrain configurations. The top three get all-LED exterior lighting. And while the Z71 adopts the color-keyed trim we saw previously, other models like the LT, LTZ, and (to a lesser extent) the top-of-the-line High Country still bring the chrome for those who want it. Whichever the model, the new Silverado boasts a more muscular-looking front-end and a more sculpted hood. Inside, the new Silverado gets an optional MyLink system with Apple CarPlay and Android Auto support. The revised truck also benefits from added safety technology and convenience features. Engine options include a 4.3-liter V6 with 285 horsepower and 305 pound-feet of torque, a 5.3-liter V8 with 355 hp and 383 lb-ft, and a 6.2-liter V8 with 420 hp and 460 lb-ft. The news when it comes to powertrains is that the eight-speed automatic launched last year on the larger V8 is now being offered on the smaller 5.3 as well. 2016 Silverado: The New Face of Strong 2016 Silverado designed to build on Chevrolet's truck momentum 2015-09-24 - Bolder, more muscular look reflects Silverado strength, dependability - Expanded use of 8-speed transmissions; additional safety technologies - Available support for Apple CarPlay and Android Auto DALLAS – The new 2016 Chevrolet Silverado 1500 brings muscular designs and new customer-focused technologies to the most dependable, longest-lasting family of full-size pickups on the road. The new Silverados make their public debut today at the State Fair of Texas in Dallas. "The new 2016 Silverado will build on the Chevy truck legacy of dependability," said Sandor Piszar, marketing director for Chevrolet trucks.

Recharge Wrap-up: NEDC's NOx problems, autonomous Chevy Volts

The International Council on Clean Transportation (ICCT) found a significant difference in NOx emissions in Euro 6 diesel cars in NEDC and WLTC testing. While 88 percent of the cars tested met emissions standards for NEDC, NOx emissions averaged five times higher under WLTC, with only 27 percent of vehicles under the limit. WLTC is considered to be a more realistic driving cycle, using hot starts and factoring a higher top speed as well as harder and more frequent accelerations than the NEDC. Read more at Green Car Congress.GM Canada will build a fleet of autonomous 2017 Chevrolet Volts. The self-driving Volts will be deployed for testing at GM's Warren, Michigan Technical Center. Employees will be able to use a carsharing app to reserve a car, which will then drive itself to the set destination. The project will allow GM to collect important data and experience to help the company more quickly develop autonomous driving technology. Read in a press release more from GM Canada, or at Green Car Congress.Carwatt is showing an electric Renault Trafic powered by second-life batteries at the COP21 environmental summit in Paris. The lithium-ion batteries used to power the EV were recycled from other Renault EVs. With the electric Trafic, Carwatt – a company that converts vehicles to use electric power – aims to demonstrate the "circular economy" of batteries, which can provide more value through a longer lifecycle. Read more in the press release below. Carwatt presents a unique automotive application for second-life batteries from electric vehicles. On the sidelines of the COP21 summit, in the Solutions Gallery running from 2 to 9 December 2015 in Le Bourget near Paris, Carwatt and its partners —Renault, Paris City Council, BPI France, the Ales Ecole des Mines Engineering School, and the Bobigny Business Campus — are showing a very special electric Renault Trafic. This prototype vehicle, the only one of kind in the world, is powered by second-life lithium-ion batteries recycled from Renault electric cars. Circular economy at work with electric vehicles When, over time, the batteries of a Renault electric vehicle fall the performance threshold specified for their initial automotive power duty (around 75% of initial capacity), they can still provide valuable service in "second-life" applications before end-of-life disposal at a recycling centre. Experiments are already under way on power storage applications, for example.