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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).

Netflix to feature electric cars from GM and others in programming

LOS ANGELES — Netflix has unveiled a new star for some of its upcoming programming: electric vehicles from General Motors and other automakers. The streaming service announced an agreement on Thursday to feature vehicles including the Chevrolet Bolt, the electric GMC Hummer pickup and the Cadillac Lyriq in TV series and films "where relevant." The companies will highlight the partnership in a commercial featuring Will Ferrell that will air during the Feb. 12 Super Bowl. Netflix and GM called the agreement "part of a commitment to a more sustainable future." Financial terms were not disclosed. Netflix said it will help creators "better understand how EVs can complement and enhance their stories." Shows that will feature GM's electric vehicles include "Love is Blind," "Queer Eye" and "Unstable." Netflix productions also will include electric vehicles made by other automakers, the company said.   Marketing/Advertising TV/Movies Chevrolet GM GMC Hummer

Thoughts on the 2022 GMC Hummer EV and the record-setting SSC Tuatara | Autoblog Podcast #650

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by News Editor Joel Stocksdale. They lead the podcast with the week's two big news stories: the reveal of the 2022 GMC Hummer EV and the 316-mph production car speed record set by the SSC Tuatara. Afterward, the editors discuss some recently driven cars, the Lincoln Continental Coach Door Edition and the GMC Canyon AT4. Autoblog Podcast #650 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown News: 2022 GMC Hummer EV reveal SSC Tuatara production car speed record Cars we're driving2020 Lincoln Continental Coach Door Edition 2021 GMC Canyon AT4 Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video: