Is Infiniti's Variable Compression Turbo the Holy Grail of Power and Efficiency?

It was 1998 and my friend Tom had just picked up a 1991 Eagle Talon TSI AWD.

“Ok, go ahead and floor it, but don’t rev it past 5,000 rpm,” Tom said.

I mashed the throttle and … nothing happened.

We were moving, but it was at the pace of a Toyota Corolla and nowhere near the rate of acceleration promised by the 2.0-liter turbo’s claimed 195 horsepower.

Disappointed, I left my foot on the throttle for a few seconds. Suddenly, I heard the whistle of the spooling turbo and a sudden shove of boost kicked in.

Four-cylinder turbo engines from the ‘90s were all similar to this. While they generated relatively big power at the top end, they also suffered from massive turbo lag and had fuel economy similar to a much larger V8.

Nissan’s new Variable Compression Turbo engine promises big power, minimal turbo lag, and decent fuel economy using some new trickery.

Is this the holy grail of turbocharged motors?

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Piston Slap: A New Wrench, A Good Wrench

TTAC Commentator sastexan writes:

Hi Sajeev, I have to find a new mechanic – my former mechanic is permanently disabled (bad shoulder – he can’t even hold a gallon jug of milk with his right arm) and his old shop is just not responsive – or as competent as I demand. So, with great heartburn, I have to find a new shop for those repairs I am either unable or unwilling to perform myself: which is most since I do not have a garage or even a driveway, much less a lift or even jack stands as the street in front of our house is pretty well sloped.

The cars in question are my resto-mod 3.0L Contour SVT, my wife’s Camry and probably my mother in law’s Millenia S (with the weird miller cycle engine). I can tackle basic repairs with my car, but sometimes it’s just easier to have someone else do it.

How should one go about finding a new mechanic / shop? What questions do you ask to determine competence? I proved a long time ago that I knew more than my local Ford dealers (including causing service advisers to get fired due to my complaining about their ignorance – including yelling at one standing underneath my car on a lift arguing about the rear sway bars), but I am not opposed to company shops if I know the mechanics are competent and the rates reasonable.

Sajeev answers:

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  • JMII Based on the human drivers I encounter everyday I'll happily take my chances with a computer at the wheel.The highway driver assist system on my Santa Cruz is great, it can self drive perfectly in about 90% of situations. However that other 10% requires you to be in control and make decisions. I feel this is the problem with an AI driving a car, there are times when due to road construction, weather conditions or other drivers when only a human will know what to do.
  • Hari Your route home sounds like the perfect stretch for a car like the Alfa Romeo Giulia. Its renowned handling and dynamic performance make it an ideal match for those curves. For enthusiasts or potential owners interested in understanding all the capabilities of the Giulia 2017, the owner’s manual is an invaluable resource. Check it out here: https://chatwithmanuals.com/automobiles/2017-alfa-romeo-giulia-owners-manual/. Our AI-powered chat makes navigating the manual simple, helping you quickly find specific details about the car's features and specs. Perfect for making the most out of those driving moments and truly understanding your vehicle!
  • Dale I'd consider the RAV4 if the Prime were on the table as paying for gas is for suckers. Otherwise, we have a couple of Mazdas and they are swell. I've driven older versions of both and the CX-5 is a nicer place to live.
  • Haran Spot-on review of the Mercedes-AMG GT’s price adjustments and new features! For those intrigued by the all-wheel drive and enhanced features of the latest model, you can delve deeper with the complete operator's manual available here: https://chatwithmanuals.com/automobiles/mercedes-amg-gt-operators-manual-edition-c2020/. It’s a fantastic resource for understanding all the specs and new additions without getting bogged down by the complexity typically associated with car manuals. Chat with the manual using AI to quickly find exactly what you need to know about this sporty beast. Perfect for those who appreciate detailed insights on their luxury investments!
  • Flashindapan Beautiful color combinations. I assumed they stop selling the TT here at least five or six years ago.