Archives: jetting

Fuel Injection Jetting: More Power

Pro-Calcs, our on-line MFI jetting calculator, was upgraded: 1. nitro methanol fuel mixtures; Pro-Calcs will determine jetting for nitro additions to meth’l from 0 to 100%; by volume or weight; also procedures for E85 and for gas. 2. correction to data conflicts from various jetting combinations 3. jetting printouts in CVS format to down-load into […]

Fuel Injection Setup & Tuning

… by Experience & Gut Feel Throughout the racing community, experience and gut feel are the most common methods for the selection of nozzle and jet size numbers for setup and tuning of mechanical fuel injection. It is a form of iteration or ‘connecting the dots’. Given enough time and expense, experience from good and […]


Our books tell how to make a lot of horsepower with fuel injection through precise air-to-fuel-ratio control; done with engine nozzle & jetting setup and tuning. Airdensityonline developed a jetting & air-to-fuel-ratio calculator for web ready devices: cell phone, IPAD, lap top, IPhone, etc.