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 ...

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 ...