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Ferrari Patents New Hybrid Turbo to Control Noise

F1 cars. BMW M3/M4. BMW M5. McLaren. Audi RS5. Those are just a few examples of cars whose noises lay victims in the path of turbocharging. But, they say the future is turbocharging. Or the present, really, if you look at how many cars already are turbo, some even base and optional engines. There are a lot of technical pros and cons to turbocharging, which I won't get into here. but one of the biggest subjective downsides is the noise. Some dismiss it, if the specs and the numbers are good. Some prefer all the whine, whooshing, and hissing. Some, however, mourn the death of N/A noise. Everyone who is even slightly familiar with what I like in cars knows I'm in the last group, and it turns out to be a special group because Ferrari engineers and/or their customers are in the group as well, because Ferrari is patenting a technology that makes turbo engines sound better. The system is a hybrid (no pun intended) between an electric supercharger and a traditional turbo. An el...

2016 BMW M4 DCT Track Review

Photos by: Graham MacNeil & Kevin Doubleday Imagine a world where only two cars exist and have ever existed; the BMW M4 and the Toyota Corolla . Assuming cost isn't a factor, just about every car buyer who has even a remote interest in high performance driving would take the M4. There would be no complaints about how it well goes, stops, or turns, how it handles, or even how it sounds. All those aspects are better in the M4; miles better, in fact. Next to a Corolla, an M4 is a super car, and a darn good one. But replace the Corolla with another car in this imaginary world, say a Lamborghini Huracan for an instance, and all of a sudden, an M4 becomes pedestrian. Perspective could make or break a car, even a good one. And that, perhaps, is the biggest contributing factor in the impression that the M4 left on me. I haven't driven any Huracans, unfortunately. But on the same day I drove this BMW M4, I drove an E46 Dinan S1 M3 and a Cayman GT4 . Comparisons to the GT4 ...






Does An Aftermarket Grille Really Increase Airflow?
I put a Saleen S281 grille to the test to answer that question.

Stock Suspension S197 Mustang With Square 305/30/19's
What you need to fit a proper size square tire setup.

How Limited Slip Diffs Make You Faster on Track
What you need to know about how they put power down and pros and cons.

Can Telemetry Explain Schumacher's Talent?
A comparison between Schumacher's and then team mate Herbert's data.






Cayman GT4 Track Review
The first Cayman with proper (911-challenging) power.

Is an EcoBoost Mustang any good on Track?
Two days at the track in a Mustang short 4 cylinders.

2016 BMW M4 DCT Track Review
It's quick (properly quick). But is it fun?

Can a stock Golf Diesel handle a Track Day?
Not your every day track beater.




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2004 Audi TT 3.2 Quattro DSG Track Review

Before getting into this, I have to confess something... I had never driven an Audi TT before. Not until this one, anyway. But that hasn't stopped me from forming an opinion about it from the comforts of my own couch while reading and watching reviews online. After all, if you've never done that, do you even know what the point of the internet is? Now, we all interpret reviews differently. Call it confirmation bias if you will, but if you like a car, you'll read a review and look at the positives as what makes the car great and the negatives are but a few quibbles you have to live with. If you don't like a car, the positives are a few things the manufacturer got right while screwing up everything else. It's a bit harsh to put the TT in the latter category, but that's where it ended up for me... I never took the TT seriously. The problem with the TT for me isn't that it's a Golf underneath, per se. There is nothing wrong with a performance car sharing a...

All Mainstream AWD and 4WD Systems Compared and Explained

Mitsubishi Evo X GSR at Atlantic Motorsport Park - Kevin Doubleday  © If you live in Canada or the US, you'll find that plenty of people hold sacred the terms '4x4' and '4WD' to describe a 'true 4x4', where you have a butch transfer case with a low speed, perhaps a body on frame chassis, and ideally a solid axle or two. I'm not sure how that translates to the rest of the world. My extensive research into the motoring industry in Europe (which exclusively consists of watching Top Gear and The Grand Tour...) concluded that most people across the pond simply refer to any vehicle that is capable of sending any power to all four wheels as a 4WD vehicle, further muddying the waters. Where I grew up, 4x4 was more or less synonymous with 'Jeep' so that's not much help either. However, despite all various systems attempting to do the same sort of thing - distribute power between all four wheels instead of two - not all systems are created equal,...

Why an Open Differential Doesn't Work on Track

C7 Corvette Grand Sport... doing a burnout with a proper diff - Graham MacNeil  © I wrote a tech post comparing various open and limited slip diffs for a comparison and I found that a lot of people were asking questions. To simplify and make it easier to read, I decide to break them up for a future tech article about handling. Make sure to stay tuned for two posts on limited slip diffs this week!. WHY DO YOU EVEN NEED A DIFFERENTIAL? A differential's job is to allow two wheels on the same axle (or two axles in a 4WD drivetrain) to spin at different speeds so a car could smoothly go around a corner. Why do the wheels need to spin at different speeds? Each wheel on a car has to travel a different path to reach the end of the turn. You can see that for yourself every time you drive on snow covered roads or muddy trails. Four different tracks by four wheels/tires on one car going around a turn - Rams Eye The Track Guy  © If you take a turn, you'll see that each whe...

Limited Slip Differential Types Compared

BMW M2 equipped with an eLSD - BMW © A few weeks ago, I posted about traditional clutch-type limited slip diffs (LSD's) and how they work. You can read about those in the previous post: How Limited Slip Diffs Make You Faster on Track . But as you might know or have learned from reading the article, they aren't without their faults, which means engineers are always working to get around those limitations. You may not be surprised to learn that something like the Ferrari 488 GTB doesn't use a traditional limited slip diff, but it's not limited to super cars, far from it. Cars like the Golf GTI, the Civic Type R, various Mustangs, Corvettes, and BMW M cars, and even the Lexus RC F and GS F, all avoid a traditional limited slip diff in favour of one of these technologies. To keep things simple, I'll focus on two wheel drive vehicles. The vast (vast) majority of principles apply to all and 4 wheel drive vehicles, but there are some subtle differences that I'll...