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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).

Why Cadillac thinks it needs to succeed in Europe to sell cars elsewhere

Ward's Auto has taken an interesting look at the renewed focus General Motors is showing towards Cadillac in Europe. Susan Docherty, president and managing director of Chevrolet and Cadillac in Europe (pictured), says in order for the luxury brand to thrive in China, it first needs to succeed in the old country. The reason? Chinese buyers look to Europe for cues as to what's deemed worthy of the term "luxury." There are hurdles to the plan, however. In addition to the fact that the EU is flooded with high-end nameplates, GM doesn't necessarily have the distribution network in place to put buyers behind the wheel.
Combine that with persistent economic woes and Cadillac's checkered past marred by a lack of diesel engine options and a bankrupt distributor, and the road ahead for the brand looks like less of an uphill climb and more like a straight-up cliff face. But Docherty is optimistic and says she has a plan for the brand. We recommend heading over to Ward's for a closer look at the full read.

Opel's version of the Chevy Bolt will confuse people at Paris Motor Show

Two things are now official. First, Opel will reveal the Ampera-e, or the European version of the Chevrolet Bolt, at the Paris Motor Show in October. Second, General Motors has outdone itself in brand confusion, topping the Bolt/Volt ridiculousness. Opel isn't giving a single-charge range for the Ampera-e but the company is promising a "significantly longer range" than other electric vehicles. The Bolt is estimated to have a 200-mile range on the EPA scale, so whatever the Opel achieves on the European cycle will be done with the same batteries and motor as the Chevy. Opel is also looking to appeal to the auto enthusiasts with other factoids, which are basically just Bolt stats translated into metric. For instance, the Ampera-e will be able to go 0 to 50 kilometers per hour (which is 31 miles per hour to us Americans, but we're talking Europe here) in just 3.2 seconds. And for those looking to stay connected, as many as seven mobile devices can attached to the car's wireless hot spot. GM said in February that the European of the Bolt would be available across the pond next year, so the most recent bit of news isn't shocking. Still, General Motors continues to create confusion between all-electric Bolt and the extended-range plug-in Volt. It's already been reported that the Korean symbol and pronunciation of what is "B" in English is identical to the English "V," meaning that there is no difference between "Bolt" and "Volt" in that country (though there are no plans to sell the Bolt in South Korea as of yet). Now, in Europe, they're taking the name they used to use for the European of the Volt — Ampera — and merely adding an "-e" at the end of it. For those looking to be less confused, take a look at Opel's press release here. Related Video: Featured Gallery 2017 Opel Ampera-e: Paris 2016 View 11 Photos News Source: Opel via Hybrid CarsImage Credit: Live photos copyright 2016 Drew Phillips / Autoblog Green Paris Motor Show Chevrolet GM Opel Electric Chevy Bolt volt ampera opel ampera-e ampera-e