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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).

Editors’ Picks October 2022 | Electric trucks and some excellent SUVs

This month sees a bevy of totally new or totally redesigned cars gain Editors’ Pick status. Important EVs like the F-150 Lightning and GMC Hummer EV quickly jump into the list, and they do so with authority, as all our editors love these trucks. The Range Rover is always a superb experience, and this generation proves to be no different. Plus, the new generation of Kia Sportage continues to surprise and impress. In case you missed our previous Editors' Picks posts, hereÂ’s a quick refresher on whatÂ’s going on here. We rate all the new cars we drive with a 1-10 score. Cars that are exemplary in their respective segments get EditorsÂ’ Pick status. Those are the ones weÂ’d recommend to our friends, family and anybody whoÂ’s curious and asks the question. The list that youÂ’ll find below consists of every car we rated in October that earned an EditorsÂ’ Pick. 2022 GMC Hummer EV The Four-Wheel-Steer system lets the 2022 GMC HUMMER EV Pickup m View 17 Photos Quick take: The Hummer amazes as an electric supertruck with its wild acceleration, incredible off-road capability, luxuriousness and epic utility. It's far from a "green" eco-friendly vehicle, but that's not the point of this technological powerhouse. Score: 8.5 What it competes with: Rivian R1T, Ford F-150 Raptor R, Ram 1500 TRX Pros: Stupid quick, tons of tech, off-road capability in spades Cons: Not efficient, annoying in tight spaces, price From the editors: Road Test Editor Zac Palmer — "I don't think I've driven a more ridiculous vehicle this year, but that's sort of the point with the Hummer. There's a great argument against this sort of EV in that it doesn't live up to being an efficient and planet-friendly vehicle, but hey, that's not the point. The Hummer EV is a supertruck and wild technological masterpiece for off-roading in the same way that a mid-engine supercar is to track performance. It's not meant to be the EV everybody drives to work and back (mostly because few can afford it), but it serves as a line in the sand of what can be done with electric off-road trucks. This pickup rules, and if you can afford one, you're going to love it." Senior Editor, Green John Beltz Snyder — "This Hummer revival is a showcase of technology and capability on the part of GM, making it an absolute blast to drive and a joy to use.

Volkswagen's latest ad is not subtle | Autoblog Podcast #509

On this week's podcast, Mike Austin and David Gluckman are joined by special guest James Riswick, who has been driving a lot of new cars lately. All of them are discussed, plus a few more from Mike and David, and Mike rants a bit about a new VW Atlas commercial. The episode wraps up with the traditional doling out of Spend My Money buying advice, during which David briefly goes out into left field. (He's back now, don't worry.) The rundown is below. Remember, if you have a car-related question you'd like us to answer or you want buying advice of your very own, send a message or a voice memo to podcast at autoblog dot com. (If you record audio of a question with your phone and get it to us, you could hear your very own voice on the podcast. Neat, right?) And if you have other questions or comments, please send those too. Autoblog Podcast #509 Topics and stories we mention GMC Sierra HD Mazda MX-5 Miata RF Mazda CX-5 Honda CR-V vs. Mazda CX-5 Mini Countryman Honda Clarity Fuel Cell Ford F-150 Raptor Lexus RC 200t VW Atlas "Luv Bug" commercial Used cars! Rundown Intro - 00:00 What we're driving - 02:43 Ad of the week - 41:40 Spend My Money - 49:14 Total Duration: 56:27 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 Feedback Email – Podcast at Autoblog dot com Review the show on iTunes Marketing/Advertising Podcasts Ford GMC Honda Lexus Mazda MINI Volkswagen mazda cx-5 ford f-150 raptor gmc sierra hd volkswagen atlas mazda mx-5 rf lexus rc 200t