Cold air is good. Hot air is bad. Every gearhead, young and old, is familiar with this line of thinking. We buy hoodscoops, cold-air intakes, and all other manner of contraptions to help feed our ...

So what do you do when you've built your motor, strapped on the biggest turbo you can tolerate and basically tuned your forced-induction car to the teeth-but you still want more power? More boost ...

In 2010, diesel engine manufacturers set a precedent when many of them added urea injection aftertreatments to their exhaust systems. This emissions solution meant another tank of fluid to fill (at ...

The idea of injecting an incompressible, incombustible liquid into an engine appears, upon initial consideration, like an inadvisable move. After all, those who have watched a driver tackle deep water ...

Water injection, a type of 'anti-detonant injection', is primarily used to minimise the chance of detonation in an engine. Detonation, also called 'knocking', can reduce power and cause engine damage ...