Racing mechanical fuel injection jetting calculator web program
one year membership (formerly procalc)
developed by bob szabo, racecarbook.com
developed by jennifer szabo, airdensityonline.com
available through our new website: mficalc.com
for normally asp MFI engines
for forced induction MFI engines
for most racing fuels: methanol, nitro (1-100%), ethanol blends, racing gas
works on any web device: cell phone, portable, stationary
1 to 8 cylinders
1 to 4 nozzles per cylnder
1 to 3 bypasses
variable bypasses: Hilborn turbo valve, BDK and All-valve
any fuel pump gpm
any weather or weather change
good for setting up for dyno test
good for setting up for first outing
can be calibrated to flow bench test or dyno test or data recorder
for drag, top speed, circle, tractor, land, water, go cart
for 4 cycle, 2 cycle, rotary
not for EFI or carburetors or OEM mech FI (rochester, bosch)
calculate jetting for low, moderate, and high altitude
calculate main bypass
calculate nozzles
calculate fuel pressure
calculate air to fuel ratio (also oxygen to fuel ratio)
data output for spread sheet record or MFI setups for subsequent outings
linked to weather data for over 1,000 tracks worldwide
videos (screen headers from procalc not yet updated to mficalc):
https://www.youtube.com/watch?v=1XcOPe1ezug&t=1s
https://www.youtube.com/watch?v=cv0TrRoalbc&t=1s
https://www.youtube.com/watch?v=oslsdOWHdvw
https://www.youtube.com/watch?v=8QusgE3sUmc
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look up RJ, How-to and Tech, Drag Racing 101, ‘air density online’ for our RJ articles.