1966 Chevrolet Corvette on 2040-cars

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Chevrolet Camaros at SEMA are a mobile accessory catalog

Chevy's goal at the SEMA Show in Las Vegas this week seems to be to show as much of its Performance and Accessories catalog as possible. That's why it brought three different Camaros - two with V8s and one powered by a V6 - with all of the best goodies from the catalog already fitted.
We gave a more in-depth recap of the Performance Camaro V8 Concept, the Performance Camaro V6 Concept and the Performance Garage Concept already, but we figured you'd like a short recap for each. It should be noted, though, that you can order all of the items you see here for your own Camaro, so be sure to take a long, hard look at our live galleries, just in case you're in the market for some mods.
Essentially, the Performance Garage Concept and the Performance V8 Concept are the same car - the only difference is that the later features a whole host of aesthetic tweaks in addition to its aftermarket, shorty exhaust headers and 2.75-inch exhaust. (The Performance Garage Concept has been usefully placed on its side; the better to see the new parts added to the vehicle.) The Performance V6 Concept is notable because, despite being a V6, there's no shortage of performance goodies fitted. All three of the Performance Camaros benefit from items from the Camaro ZL1, which can also be ordered through the catalog.

'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).

Audi S4 drivers are the most accident-prone, insurance report says

Culling data from more than 4.6 million automobile insurance applications, researchers at the Insurify insurance comparison marketplace picked a winner — or more to the point, a loser — in its determination of the car model with the most accidents so far in 2023: the Audi S4. Why does the sporty, luxury-class German sedan rank so high (or so low)? The organization found that S4 drivers, piloting a car with almost 350 horsepower, are among those who collect the most speeding tickets, and that they get into accidents at a rate 54 percent higher than the national average. If the S4 isnÂ’t a surprise with an at-fault accident rate of 11.7 percent, consider the “family friendly” brand that appears three times on the Insurity list: Subaru. It is represented by three models, including the turbocharged WRX and XV Crosstrek, and at the better-performing bottom of the list, the Subaru Impreza, with an accident rate of 10.3 percent.  In 2023, 7.6 percent of U.S. drivers were involved in at least one at-fault accident in the prior seven years. For drivers of cars on this list, the average at-fault accident rate was 10.5 percent, meaning these drivers are 1.4 times as likely to have an at-fault accident on record. According to its statement, the Insurity data science team explored key safety features, driver behavior, and Insurance Institute for Highway Safety (IIHS) evaluations to pinpoint possible reasons behind these carsÂ’ high accident rates. Following is the list, counting down to the models with most reported accidents: 10. Subaru Impreza (percentage of drivers with a prior at-fault accident on record: 10.3 percent; MSRP base model): $19,795) 9. Kia Niro (percentage of drivers with a prior at-fault accident on record: 10.4 percent; MSRP base model): $26,590) 8. Chevrolet Silverado LD (percentage of drivers with a prior at-fault accident on record: 10.4%, MSRP base model): $34,500) 7. Subaru XV Crosstrek (percentage of drivers with a prior at-fault accident on record: 10.5 percent, MSRP 6. Subaru WRX.(percentage of drivers with a prior at-fault accident on record: 10.7% MSRP base model): $29,605) 5. Toyota GR86 (percentage of drivers with a prior at-fault accident on record: 10.8 percent MSRP base model): $29,900) 4. Hyundai Veloster N (percentage of drivers with a prior at-fault accident on record: 10.9 percent; MSRP base model): $32,500) 3.