2014 Chevrolet Silverado 2500 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).

2018 Woodward Dream Cruise: What to know and where to go

If there's anything that proves Detroit's motor-oil-in-the-veins, gearhead bonafides, it's the annual Woodward Dream Cruise, which will bring an anticipated 1.5 million or so people from near and far, plus tens of thousands of classic and custom and just plain weird cars, to a 16-mile portion of Woodward Avenue on Saturday for the 24th year. Loved by gearheads, collectors and the merely curious, who see it as the Motor City's version of Mardi Gras, and loathed by others, who deride it as the world's largest traffic jam, the Dream Cruise is nothing if not an explosion for the senses. What will you see there? Well, as Autoblog Managing Editor Greg Rasa put it last year, "There are historic cars. And works of art. Some are worth vast sums of money, and some are rat rods and rust buckets. And some are bizarre creations that make you ask, 'What were they thinking?'" A few things are certain: You will see many incredible automobiles. There will be plenty of T-shirts and other merch, official and not-so-much. It will be crowded, and probably hot. The Cruise will officially go from 9 a.m. to 9 p.m., though of course cruisers have been out already for weeks. And there are plenty of attractions, both on and off the pavement of Woodward. Tony Michaels, the Dream Cruise's executive director, said the event is special for the Detroit region. "Together we celebrate the automobile and what it has meant to us," he told Autoblog. "To see the these fantastic vehicles and the proud owners says so much about who we are and our pride. "People should take it in to see history running 16 miles down Woodward Avenue and to be a part of the greatest automobile event in America." Ford is once again serving as the Dream Cruise presenting sponsor and will hold the 20th anniversary of the Mustang Alley at the corner of Nine Mile and Woodward in Ferndale, where it expects as many as 1,000 Mustangs to line up. It will also show off its lineage of trucks at 13 Mile, along with several performance vehicles at Duggan's Irish Pub at 31501 Woodward in Royal Oak. The company on Thursday unveiled the 2018 Mustang Cobra Jet drag car to celebrate the nameplate's 50th anniversary. Just 68 examples are planned of the $130,000 limited-edition model Other Ford activities include: Sales of tickets for a raffle of a one-off Kona Blue Mustang Bullitt, starting at the media clubhouse at 2 p.m. Friday. The raffle itself takes place in November and will support juvenile diabetes research.

2021 BMW M3 and M4 vs all the high-powered sport sedans and coupes

Should you have a found a way to get past that schnoz, you've probably digested some of the basic specs for the all-new 2021 BMW M3 sedan and M4 coupe specs. They're plenty impressive. There's also, basically, two sets of them thanks to the regular and Competition versions that differ in engine output and transmission type.  But how do they compare to other ultra sport sedans and coupes? Well, we were wondering that too, so we fired up the Autoblog Comparison Spreadsheet Generator 5000 (aka me chained to my computer in a dark basement).  Sadly, there are surprisingly few competitors for the 2021 BMW M3. Rival sedans include the Mercedes-AMG C 63 and the Alfa Romeo Giulia Quadrifoglio, along with the Audi RS 5 Sportback sedan/coupe/hatchback thing. There's no more Lexus IS F, the Cadillac CT4 Blackwing has yet to arrive and Jaguar doesn't offer a spicy XE R.  Happily, there are more coupe rivals for the 2021 BMW M4, including the two-door versions of the AMG and Audi as well as the Lexus RC F. I also included the Ford Shelby GT350 and Chevrolet Camaro SS 1LE. On paper, they align incredibly well. On the street and on a track, I can personally attest that these Americans are fully capable of keeping up and/or bettering the fancy-pants luxury brands (and let's not forget there are even more powerful, hardcore versions available). If they don't align in terms of price or prestige, whatever. OK, let's get to the spreadsheet. Let's start with the coupes and note that I didn't bother listing the dimensions for the M4 Competition and C 63 S as they are identical to their "lesser" siblings.  I won't bother burning words explaining what you can see on the chart. Instead, I'll point out a few things that stood out to me. First, BMW M comes awfully close to matching the output of AMG's twin-turbo V8 despite having two fewer cylinders. Similarly, Audi manages to better the 0-60 time of the M4 Competition and tie the C 63 S despite being WAY down on power. It's not like it weighs less. Magic? Second, and speaking of 0-60 times, remember the importance that transmission and drivetrain make with them. It's not just horsepower and torque. An automatic will be quicker and easier to launch than a manual, while all-wheel drive provides more instantaneous and beneficial grip.