Over time, in this column, we have touched upon several aspects of not only how to achieve higher levels of volumetric efficiency (as it relates to torque) but the importance of this feature in a ...

Turbocharged engines make big torque at low rpm, but those two numbers, peak torque and its corresponding rpm, don’t tell the full story, as boost pressure isn’t solely a function of engine speed. A ...

There's been a lot written about optimizing header design, but most of us can't afford one-off, custom-built, ideal-for-the-combination headers. Realistically, we use what we can buy over the counter.

What a difference a little extra engine torque makes. I recently had the privilege of being one of the first drivers outside of test fleets to put a new fuel economy and performance concept from Volvo ...

New engine technology promises not only improved engine efficiency, but also the ability to spec your drivetrain to further enhance fuel economy. Exhaust gas recirculation creates higher exhaust ...

It’s refreshing to catch a glimpse of the top-mounted intercooler while looking at the functional hood scoop on the 2008 Subaru Impreza WRX. So many scoops, vents and wings are purely cosmetic ...