FuelInjectorCalculator.com is a specialized automotive utility built for tuners, mechanics, and high-performance enthusiasts. We know that in the world of engine building, “guessing” is not an option. Undersized injectors lead to lean conditions and melted pistons, while oversized injectors cause idle surge and wash out cylinder walls.
We created this tool to replace static charts and “rule of thumb” math with precise engineering formulas. Unlike basic calculators, our engine accounts for Boosted vs. NA applications (BSFC), E85 Ethanol fuel requirements (which demand ~30% more flow), and Fuel Pressure differentials. Whether you are swapping an LS into a classic muscle car or pushing a 4-cylinder turbo to the limit, we provide the data you need to fuel your build safely.
(Note: We participate in the Amazon Services LLC Associates Program, earning a small commission on automotive parts purchased through our links at no extra cost to you.)