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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).

Mother's Day Suggestion No. 2,506

With Mother's Day coming up, we're always looking for new gift ideas to celebrate the occasion, but hot laps around a track might not be the best suggestion for Darius Khashabi. In a video posted on YouTube, Khashabi straps his mom into the passenger seat of his C6 Corvette Z06 for some laps around Sonoma Raceway (formerly Infineon Raceway) at "60 percent" with comical results.
Now this isn't the first time Mama Khashabi has gotten seat time in her son's car around a track, as his YouTube page shows him pulling a similar stunt - with similar results - around Mazda Raceway Laguna Seca last year. Scroll down for the video, but know that the action really gets going at around the 1:40 mark.

Shanghai debuts, Jeep's new Rubicon anniversary rigs | Autoblog Podcast # 777

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Associate Editor Byron Hurd for a recap of the past week's worldwide debuts along with some updates from their recent adventures. They start off discussing the rumors of a new Ford Mustang Raptor and what that means in the context of previous rumors of a Corvette SUV. Then it's time to talk Shanghai, where Polestar, Buick, Volkswagen, Porsche and Lincoln all had big reveals. After that, they segue to Byron's trip to Moab for the 2023 Easter Jeep Safari preview where he drove the AEV Level II Jeep Wrangler Rubicon 20th Anniversary Edition. From there, they reminisce about Mustangs in a nod to the nameplate's 59th anniversary, after which they stick to the theme with a sub-$15,000 RWD used-car discussion. Is there anything worth buying in this price bracket in today's economy? Autoblog Podcast # 777 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 ShanghaiPolestar 4 is a Polestar without a rear window 2024 Lincoln Nautilus debuts with big redesign, new hybrid option Volkswagen ID.7 fully revealed as VW's sleek and spacious flagship electric sedan 2024 Porsche Cayenne gets more power, screens, equipment 2024 Buick Envista revealed as a good-looking, quite-affordable crossover 'coupe' News Ford Mustang Raptor off-road coupe rumored for 2026 2025 Chevy Corvette SUV said to start with ICE power, not be EV-only What we're driving 2023 Jeep Wrangler Rubicon 20th Anniversary Edition: On the trail to six figures 2023 Easter Jeep Safari: The search for the missing pink 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: Podcasts Rumormill Auto Shanghai Buick Chevrolet Jeep Porsche Volkswagen Crossover SUV Concept Cars Electric Future Vehicles Luxury Off-Road Vehicles Performance Sedan Polestar