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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).

GMC offers more 2024 Hummer EV SUV details, photos

GMC has shared more details about its 2024 Hummer EV SUV after its debut during the NCAA Final Four tournament. The SUV which follows the Hummer EV pickup, is smaller, more maneuverable and has a few features the truck doesn’t. GM says itÂ’s meant to strike a balance between off-road capability and on-road driving. GM also says Edition 1 reservations are already sold out. Compared to the truck, the Hummer SUV has a wheelbase about 9 inches shorter. With four-wheel steering, its turning circle is just 35.4 feet, which GM emphasizes is tighter than that of the Ford Mustang Mach-E (38.1 feet). ItÂ’s also less than the Hummer pickupÂ’s 37.1-foot turning circle. The SUV, which, at 196.8 inches long, is 20 inches shorter than the truck overall. It also features a much shorter rear overhang, at 35.5 inches. While thatÂ’s all helpful maneuvering through city traffic or suburban parking lots, it also provides advantages off-road. It has an approach angle of 49.6 degrees, a 49.0-degree departure angle and a 34.4-degree breakover angle. Suspension travel is 13 inches front and rear, with 16 inches of maximum ground clearance thanks to its Extract Mode that temporarily raises the vehicle to get out of tricky terrain. It can ford water 32 inches deep. It also features the same CrabWalk mode as the pickup. Available Ultravision provides 17 cameras, including underbody views to help navigate the trail. The Hummer SUV benefits from an enclosed cargo area behind the second row of seats. It still features the Infinity Roof with removable panels above the two seating rows to essentially turn the SUV into a convertible. At the rear is a swing-out tailgate that opens wider than the width of the vehicle. A spare tire rides on the tailgate as well. With the rear seats folded, cargo volume peaks at 81.8 cubic feet.  Additional hidden storage space is found below the recycled rubber floor mat, which features a design inspired by the moonÂ’s Sea of Tranquility (that's where Apollo 11 landed). As for technology, the Hummer SUV gets a 13.4-inch infotainment screen, plus a 12.3-inch instrument display in front of the driver. Fourteen cameras come standard, and the aforementioned Ultravision provides a total of 17 cameras, including a surround view. The MyGMC mobile app offers satellite rendered trail maps that can also help manage energy consumption off-road and make sure you have enough juice to make it to a charger when finished.

Autoblog Technology of the Year Award Special | Autoblog Podcast #758

This episode of the Autoblog Podcast features Editor-in-Chief Greg Migliore, Road Test Editor Zac Palmer and Consumer Editor Jeremy Korzeniewski. The trio begin by discussing the 2022 Technology of the Year award. Ford's Onboard Scales and Smart Hitch hauling/towing tech as tested in the F-150 Lightning won this year. Why the Ford won, how testing went down and Ford's competition — including the GMC Hummer EV and Genesis GV60 — are discussed. After diving through the Technology of the Year award testing, the three take on this week's news. A mysterious vehicle based on the Corvette (that isn't a Corvette) is supposedly on its way. Audi is giving us "Performance" versions of the RS 6 Avant and RS 7 Sportback. Plus, we discuss a recent study that provides data for the 10 longest lasting vehicles on the road today. After the news, the crew dive into the cars they've been driving this week. Greg's been behind the wheel of a Nissan Pathfinder, while Jeremy and Zac have been driving some plug-in hybrids, including the Lexus NX 450h+ and Autoblog's long-term BMW 330e xDrive. Send us your questions for the Mailbag and Spend My Money at: Podcast@Autoblog.com. Autoblog Podcast #758 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 2022 Autoblog Technology of the Year finalists and winner News Mysterious Corvette Audi RS 6 Avant Performance and RS 7 Sportback Performance revealed 10 longest lasting vehicles on the road today Cars we're driving 2022 Nissan Pathfinder SV 2022 Lexus NX 450h+ 2022 BMW 330e xDrive Long-Term tester 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: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Green Podcasts Ford Genesis GM GMC Technology Technology of the Year Truck Crossover SUV Electric Hybrid Luxury Off-Road Vehicles Performance Sedan