2008 Chevrolet Cobalt Lt on 2040-cars

Auto blog

'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).

Texas sues GM, saying it tricked customers into sharing driving data sold to insurers

Texas filed a lawsuit Tuesday against GM over years of alleged abuse of customers' data and trust. New car owners were presented with a "confusing and highly misleading" process that was implied to be for their safety, but "was no more than a deceptively designed sales flow" that surrendered their data for GM to sell. The suit contends that at no point was selling driving data ever even suggested as a possibility, putting GM in violation of the state's consumer protection laws. Texas Attorney General Ken Paxton is seeking a jury trial and at least $10,000 per offense (every GM car sold in the state since 2015) and a hefty add-on of $250,000 in cases where the victim was over 65. Texas seems to be flying high after a recent $1.4 billion settlement from Meta over other privacy concerns. This may well be a way to solve any pending budgetary issues in the Lone Star State.

Toyota tops Kelley Blue Book's Resale Value Awards

Kelley Blue Book announced its annual Best Resale Value Award winners, and we weren't too surprised to see the list dominated by Japanese automakers - mainly Toyota and Honda. KBB hands out the awards based on the projected residual value of mostly all 2013 model year vehicles, and Toyota skated home with a number of awards including 10 of the 22 overall categories and having five of its products in the top 10 for models with best resale value. KBB's Best Resale Value Awards were announced in the same week as the ALG Residual Value Awards, and there were many similarities between both lists, especially when it came to Toyota.
To come up with its winners, KBB measures depreciation over the first five years of ownership, and looks for the cars it expects to hold its value the best after this time; on average, the report says the 2013 model year vehicles will lose 61.8 percent of its value in five years. Of the 22 categories, 15 slots were filled by Toyota, Honda and Nissan products, while the Camaro and Porsche (Cayenne and Panamera) each took home a pair of awards. If Toyota has anything to be upset about in this list of cars, it's that categories for Hybrid/Alternative Energy Car and Electric Vehicle went to the Ford Fusion and Chevrolet Volt, respectively.
The overall top 10 models for the best resale value in 2013 are, in alphabetical order: