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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).

2023 Chicago Auto Show Mega Photo Gallery: See all the new cars from the show

The 2023 Chicago Auto Show played host to a number of reveals this year, and we were there to capture all of them. In traditional auto show fashion, that means you’re getting a mega gallery of galleries to flip through and see all the vehicles on the show floor. Our EditorsÂ’ Picks from the show are already out — spoiler alert, the 2024 Toyota Grand Highlander took home the prize. That said, there were other important reveals like the 2024 Volkswagen Atlas and Atlas Cross Sport and the 2024 Subaru Crosstrek. We also learned some interesting tidbits, such as the fact that VW is considering a pickup, and Jeep owners really are plugging in. To see the photos, scroll on down and start flipping through those galleries.   2024 Toyota Grand Highlander 2024 Toyota Grand Highlander View 7 Photos 2024 Volkswagen Atlas 2024 Volkswagen Atlas View 14 Photos 2024 Volkswagen Atlas Cross Sport 2024 Volkswagen Atlas Cross Sport View 7 Photos 2024 Ford Mustang Dark Horse with its carbon fiber wheels 2024 Ford Mustang Dark Horse with carbon fiber wheels View 7 Photos 2024 Chevrolet Corvette E-Ray 2024 Chevrolet Corvette E-Ray View 10 Photos Jeep Wrangler Anniversary Editions Jeep Wrangler Anniversary Editions View 3 Photos 2023 BMW XM 2023 BMW XM View 6 Photos Ram Revolution Concept Ram Revolution Concept View 6 Photos NASCAR Chicago Street Race Pace Car — Toyota Camry NASCAR Chicago Street Race Pace Car ? Toyota Camry View 4 Photos Everything else at the 2023 Chicago Auto Show Lamborghini Countach LPI 800-4 View 12 Photos Related video: Chicago Auto Show BMW Buick Chevrolet Ford GM GMC Hummer Jeep Lamborghini RAM Toyota Volkswagen Truck Coupe Crossover SUV Concept Cars Electric Hybrid Luxury Off-Road Vehicles Performance Supercars Sedan

2023 Cadillac Escalade-V and Honda HR-V | Autoblog Podcast #735

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore and Senior West Coast Editor James Riswick have been driving some interesting vehicles, including the Cadillac Escalade-V, VW Jetta, BMW X3 and the new Honda HR-V. They also compare the Duramax-powered Chevy Silverado High Country to the 6.2-liter GMC Sierra Denali Ultimate. Senior Editor, Green, John Beltz Snyder drops in with a dispatch from the first drive of the 2023 Cadillac Lyriq, previewing his upcoming review of the brand's first EV. Finally, they open the mailbag and help a reader pick a used car for under $20,000 in the Spend My Money segment. Send us your questions for the Mailbag and Spend My Money at: Podcast@Autoblog.com. Autoblog Podcast #735 Get The Podcast Apple Podcasts – Subscribe to the Autoblog Podcast in iTunes Spotify – Subscribe to the Autoblog Podcast on Spotify RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Cars we're driving 2023 Cadillac Escalade-V 2022 Volkswagen Jetta 2022 BMW X3 M40i 2023 Honda HR-V 2022 Chevy Silverado High Country w/Duramax vs. GMC Sierra Denali Ultimate w/6.2-liter Dispatch: 2023 Cadillac Lyriq Spend My Money: Sub-$20k used car Feedback Email – Podcast@Autoblog.com Review the show on Apple Podcasts Autoblog is now live on your smart speakers and voice assistants with the audio Autoblog Daily Digest. Say “Hey Google, play the news from Autoblog” or "Alexa, open Autoblog" to get your favorite car website in audio form every day. A narrator will take you through the biggest stories or break down one of our comprehensive test drives. Related video: