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Next-gen Cadillac CTS-Vs caught in parking lot

A pair of camouflaged Cadillac CTS prototypes were spotted, and thankfully photographed, outside a grocery store in Southern California. From the image above - there are plenty more if you click over to TotalCarScore.com - it appears these could be testers for the 2014 CTS-V, but that is just speculation. We've seen the obvious "V" motif in the grille before, and there's what could be another "V" in the design of the side mirrors.
The hood on the car in the background appears to include two bulges, but the single shot that affords a tiny peek under the hood shows reveals only the airbox. Plenty of rumors, and the sight of an engine cover inscribed with the words "Twin Turbo," have caused people to wonder if a twin-turbo V6 will live under the production car's hood instead of the V8 currently there. In back, instead of the round tailpipes found outboard on all the CTS sedans, there's a pair of integrated tips in a parallelogram shape. A new shifter with contrasting stitching was spied in the cabin.
If predictions hold up it will arrive later this year. When it does, expect the body underneath all that camo to be softer on the eye compared to the current car - less science and more art. For now, hit the link to see more spy shots of what's coming.

Reservations for Cadillac CT4-V and CT5-V Blackwing models to open in February

Cadillac will unveil its high-performance CT4-V Blackwing and CT5-V Blackwing sedans on Feb. 1 and will accept reservations for the cars the same day. Only 250 examples of each car will be built for 2022, and immediately after the reveal, customers can secure one of these Caddies with a $1,000 deposit, which is refundable. Deliveries are set to begin in mid-summer. As a special enticement, those first 250 cars will get a numbered plaque on the steering wheel, which indicates the model, transmission, and build sequence. Note that the plaque comes only on cars equipped with the high-performance steering wheel, which based on the teaser image below appears to have carbon fiber accents. It's standard on the CT5-V Blackwing and included on mid-level and higher versions of the CT4-V Blackwing. We already know that the CT5-V Blackwing will be available with carbon fiber seatbacks. More exciting news is that Cadillac will buck the prevailing trend and offer a six-speed manual transmission as standard equipment in both cars. A 10-speed automatic also will be available. It's not yet known what engine will power the sedans, although it's not expected to be the eponymous 550-hp Blackwing V8 that had an abbreviated run in the just-discontinued CT6-V. Cadillac has also announced that Blackwing buyers can avail themselves of a 2-day high-performance driving school experience at Cadillac's V-Series Academy at the Spring Mountain Motor Resort in Pahrump, Nevada. They're on their own as far as getting there, however. The unveiling of the two new Blackwings on Feb. 1 will take place at the brand's main website as well as its Twitter page. Related Video:    

GM patent reveals new two-stage turbocharger

Modern turbochargers may be some of the best ever made, but performance is something that engineers are always trying to improve. According to GM Inside News, General Motors (GM) is hoping to alleviate some of the negative aspects of a two-stage turbocharger setup with a newly-patented design. The patent, that was filed on May 19, 2016, reveals a clever bypass system that allows the engine, a four-cylinder unit, to optimize both the low-pressure and high-pressure inlets for its respective functions. According to the filing, a conventional two-stage turbocharger setup is engineered to allow both turbines to operate simultaneously at low and mid engine speeds. At high engine speeds, only the low-pressure turbine works. The setup can't isolate either the low or high pressure side, which can impair low-end performance. GM's new two-stage turbocharger setup looks to eliminate this by linking the high-pressure turbo to the exhaust manifold through the high-pressure inlet duct. The low-pressure turbo is attached to the high-pressure turbo by a low-pressure inlet duct, which is linked to a connecting channel. A single actuator that is housed in the exhaust manifold creates a bypass that can opens the high-pressure inlet or close the connecting channel. Depending on what the engine load and speed is, the ECU guides the actuator—a single rotating spindle with discs corresponding to flanges on the high and low pressure sides—to isolate one of the two turbos. Isolating the turbos allow the respective inlets to be engineered for the best possible fluid dynamic performance. The setup should increase performance and decrease lag. There's no word on what car this setup will make an appearance on, but it will most likely be used in premium vehicles before trickling down to the rest of GM's vehicles. Related Video: News Source: GM Inside News, AutoGuide via GM Authority Cadillac Chevrolet GM Technology Sedan turbo patent engine turbocharging