A LITTLE DIESEL 101
Adding horsepower for racing, towing, mileage (yes, more HP often means better MPG) or just for fun will eventually mean you’re gonna need more fuel and more air. Your first performance mod’s generally should be a good tune, plus a higher flowing intake and exhaust. Once you’ve done that, assuming you have plenty of air available (if not, you’ll need a new turbo here) adding fuel to the mix will be the next step in modification. So, how do we get more fuel into these beasts? Tuning is the first part, but a good tune can only go so far as the injectors will eventually run out of fuel supply or won’t be able to flow enough fuel due to their factory design. Obviously, adding larger injectors will get the job…