Injecting water and/or methanol into a diesel engine (gas, too) has been around for more than 75 years, but it didn't really have a good, practical application until WWII, when supercharged and ...

There are many ways to add power to your vehicle. It ranges from the cost-efficient modifications you can make to the more expensive engine and supercharging upgrades your mechanic will have to ...

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 ...