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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).

New Bright creating exclusive 1:8 scale radio-controlled C7 Corvette

If you want a new 2014 Chevrolet Corvette but can't quite save up enough pennies for the monthly payment, we have good news for you. Toymaker New Bright has pulled the covers off of its 1:8 scale remote-controlled version of the American sports car. Complete with a very detailed interior and LED headlights, this large-scale R/C is as close as most of us will ever come to having one of the menacing Chevrolet models to call our very own. New Bright still hasn't released pricing or availability, but word has it the coupe should hit the market soon.
Right now, it appears as if the C7 will hit shelves in Torch Red, though we don't know if other colors are planned as well. The good news is that New Bright isn't exactly turning its back on the old C6 - representatives say the company will continue to make its popular C6R racecar for those who prefer round taillights.

General Motors Recall List

It seems General Motors can't go more than a few weeks without issuing a major recall. Since the initial ignition lock recall on February 10, over 25 million vehicles have been recalled for defects. It seems General Motors can't go more than a few weeks without issuing a major recall. Since the initial ignition lock recall on February 10, over 25 million vehicles have been recalled for defects. We used the National Highway Traffic Safety Administration recall list to compile a snapshot of all the GM vehicles recalled in the last two months. NHTSA also provides a search engine that allows owners to search for recalls on their vehicle. An automotive company must do everything in their power to notify its customers when a recall is issued on a vehicle. If you own any of the following vehicles and you have questions regarding your car, you can contact Chevrolet at 1-866-694-6546, GMC at 1-866-996-9463, Buick at 1-800-521-7300 and Cadillac at 1-866-982-2339. Or check out General Motor's recall site. Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153) or go to www.safercar.gov. Here's a brief summery of the other vehicles currently under recall: July 26 – 414,333 cars affected NHTSA Campaign Number: 14V447000 Models under recall: Certain model year 2011-2012 Buick LaCrosse, Regal and Chevrolet Camaro, as well as certain 2010-2012 Cadillac SRX, Chevrolet Equinox and GMC Terrain vehicles, equipped with power height adjustable driver and passenger seats. Problem: In the affected vehicles, the bolt that secures the driver's and passenger's power front seat height adjuster may fall out causing the seat to drop suddenly to the lowest vertical position. Consequence: If the driver's seat unexpectedly drops, the distraction and altered seat position may affect the drivers' control of the vehicle, increasing the risk of a crash. Solution: Dealers will replace the height adjuster shoulder bolts, free of charge. July 14 – 16,939 cars affected NHTSA Campaign Number: 14V341000 Models under recall: Certain model year 2011 Cadillac CTS vehicles manufactured October 18, 2010, to June 2, 2011. Problem: In the affected vehicles, vibrations from the drive shaft may cause the vehicle's roll over sensor to command the roof rail air bags to deploy. Consequence: If the roof rail air bags deploy unexpectedly, there is an increased risk of crash and injury to the occupants.