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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).

First-edition Detroit muscle raises millions for charity at Barrett-Jackson

Amidst all the classic metal crossing the auction block each year in Scottsdale, AZ, Detroit automakers have a tradition of donating the first examples of their most enticing new muscle cars, with the proceeds of their sales going towards worthwhile charities. This year, Barrett-Jackson handled three noteworthy examples. The highest price among them was the first Ford Shelby GT350R Mustang with the VIN #001, which raised $1 million for the Juvenile Diabetes Research Foundation. General Motors donated the first new Chevy Corvette Z06 Convertible, the first retail example of the droptop supercar garnering $800,000 for the United Way. Along with the Z06, GM also donated the first new 2016 Cadillac CTS-V sedan, which brought in $170,000 for Detroit's College for Creative Studies. Although these were the headline Motown muscle machines furnished by the automakers themselves, they weren't the only vehicles auctioned off for worthy causes. A 1950 GM Futurliner bus donated by collector Ron Pratte led the charge when it brought in $4.65 million for the Armed Forces Foundation. Other lots included a custom Jeep Wrangler donated by SEMA ($85k), a new M5 donated by BMW ($800k), a '79 Oldsmobile Cutlass Hurst ($140k), '39 Cadillac LaSalle C-Hawk ($410k), Jeff Gordon's 1999 NASCAR-spec Chevy Monte Carlo ($500k) and a Victory Cross Country 8-Ball motorcycle ($180k). All told, the charity lots raised over $8.7 million for local and national charities. BARRETT-JACKSON REACHES HISTORIC HIGHS FOR SALES, CROWDS AND CELEBRITY APPEARANCES IN SCOTTSDALE • Barrett-Jackson sold 1,611 vehicles, which went for more than $130 million (unaudited), smashing records in the company's 44-year history during the 10-day auction at WestWorld of Scottsdale • Automobilia sales nearly tripled world records, with 2,000 pieces selling for more than $6.55 million • Celebrity attendance and crowds, along with ratings on Discovery and Velocity, spike SCOTTSDALE, Ariz. – Jan. 18, 2015 – Barrett-Jackson, The World's Greatest Collector Car AuctionsTM, reached historic highs during the Scottsdale auction at WestWorld from Jan. 10-18, 2015. During the 10-day auction, Barrett-Jackson recorded more than $130 million in vehicle sales (unaudited) and a world record $6.55 million in automobilia sales (unaudited), making it the highest auction in sales to date. The Ron Pratte Collection alone brought in over $40.44 million in vehicle and automobilia sales.

Chevy admits there's confusion over Bolt and Volt names

Offering the possibility of 200 miles of driving range and the potential for a price of about $30,000, the Chevrolet Bolt is an incredibly enticing vehicle, and it has an opportunity to be a big player in the EV world. However, the hatchback has been plagued by one problem since the moment it debuted – the name. Bolt sounds very similar to Volt, Chevy's extended-range plug-in, and they can be easy to confuse in a conversation. That's not the best quality to have when trying to get a new vehicle's name out there among customers, and General Motors North America president Alan Batey told the Detroit Free Press that the company is aware of the problem. While the EV is definitely going into production, the model might be wearing a different moniker when it hits showrooms. "We're still in the decision phase. It could go either way," Batey said to the Free Press. He indicated the automaker still has about a year before a final decision is necessary. The Bolt will be built at GM's Orion Assembly plant in Michigan and will likely go on sale around 2017. That will put the Chevy on the market at roughly the same time as the 200-mile Tesla Model 3. Batey didn't seem too concerned, though. "Unlike Tesla, we can spread the cost over a whole lineup," he said to the Free Press. The future doesn't look quite so bright for the Spark EV, though. Batey suggested that it might not last once the longer-range Bolt fills that niche in the lineup. Related Video: