Came here to say this same thing, I was surprised I had to scroll this far down to find your comment. I don’t think two-stage turbo systems are inherently unreliable. The reason Navistar failed with the Maxxforce was because they tried to meet extremely strict NOx regulations without an SCR system and couldn’t do so…

Even in modern autos or manuals, I’d argue that it’s hard to judge speed by the engine rpm. At highway speeds, the engine speed just doesn’t change all that much with vehicle speed. Add in the sound deadening and quiet exhausts of most modern cars and I’d say even most Jalops would have a hard time guessing road speed…

My wife’s car doesn’t have cruise control and we often make the 6 hour drive to visit her family in her car because it gets better mileage than my truck. Yes, maintaining a consistent speed can be difficult, but if you’re paying attention it’s not that hard to keep your speed within 2-3 mph of your target on either…

Do you live in San Antonio? I notice this exact same thing all the time here! Whenever there is a gentle curve on the highway, people seem to slow down too much and cause traffic to back up. If I can take the same curve at 5-10 mph over the speed limit in my slightly-lifted pickup, then there’s no reason for anyone…

Turbo ALL THE THINGS!!!

I soon as I saw the trailer, I started refreshing jalopnik over and over waiting for this. Thanks Jason!

There were multiple roof panels with trapped water...

Tom, for CarGurus, do you feel like their deal rating system is accurate? Or would looking up the NADA value of the cars be a better estimate?

The popularity or wearable fitness tracking devices and pokemon GO definitely led to more people out walking last year 

Starred for brown leather interiors...I’m in the market for a used 335i and the saddle brown seats look amazing! Like this one!!!

When the system is off, the high pressure-ratio supercharger could just be partially bypassed to keep temperatures down. Also, yes you’re right that blowers lose efficiency quickly at high PRs, even more reason for improved charge cooling!

I have to disagree that modern engines aren’t very limited by knock. Modern engines are typically boosted and high compression ratio, both things that lead to a higher propensity for knocking. I work at an engine research company and one of the main advances made in recently was to develop a system to introduce high…

More cooling can allow the supercharger to be designed with a higher pressure ratio. Superchargers are positive displacement compressors, so for every revolution they output a specific volume of air. If that volume has a higher density from the higher pressure ratio then it also has more mass.

Two things:

Yep, recognized it by the armrest/center console. Same one I have in my 2012!

Pretty easy to lose your license plate when the bottom of the bumper where it’s attached can fall off just from hitting a puddle of water too fast. As I saw happen to a Toyota Solara the other day.

Technically most modern cars with 4 valves per cyl have pent-roof combustion chambers, not hemispherical. They’re based on the same idea, but not quite the same.

I wouldn’t worry all that much about emissions on a modern gasoline-powered car. The three most harmful exhaust products (NOx, CO, and unburned hydrocarbons), are all nearly eliminated by 3-way catalytic converters. As long as the standards for these species don’t change, and manufacturers continue to use catalytic…

Do you have a source for this claim? I’m genuinely interested in seeing the data on this. I agree with you that having a gun in this situation likely would not have changed the outcome, and if I were carrying a gun in the situation I would likely choose not to draw it. That said, I still support an individual’s right…

It’s definitely a good concept, but execution has been difficult. The opposed piston setup can drastically reduce heat transfer losses (which can account for about 20% of fuel energy in a diesel engine), but frictional losses will likely be higher because of the dual crankshafts. At high loads, frictional losses are a…