Nitrous-oxide injection systems
  • Home
  • Direct Port Systems
  • Plate Systems
  • Flow Testing
  • Multi-Stage Direct Port and Pro Outlaw 632
  • DXP STREET PLATE
  • Fuel Management Products
  • Nitrous bottles & parts
  • Solenoid Valves
  • Spark Plug Reading Tool
  • Flow matched jets
  • Plumbing Services, Nozzles & Bungs
  • Fast Lane T-Shirts & License Plate's
  • The Purge
  • Downloads
  • Video's
  • Contact
  • Terms and Conditions of Sale
  • Percentage Change Calculator
Percentage Change Calculator

EFI and flowed Nitrous system fuel tuning

5-6% fuel move is a .5 air/fuel ratio point change in high gear: 
​

 For example, If you’re trying to lean the engine/ nitrous system down from 12.0:1 to a 12.5:1 Air/Fuel Ratio, then you will need to remove 5-6% of fuel.  Put your current fuel pounds per number (PPH) in the calculator link above and put a new fuel pph value in then calculate to see the percentage change.  You can also use to calculate how much fuel to add to richen the AFR. 
Copyright © 2023 FASTLANE Nitrous Racing Systems
Tyler, TX  75707
  • Home
  • Direct Port Systems
  • Plate Systems
  • Flow Testing
  • Multi-Stage Direct Port and Pro Outlaw 632
  • DXP STREET PLATE
  • Fuel Management Products
  • Nitrous bottles & parts
  • Solenoid Valves
  • Spark Plug Reading Tool
  • Flow matched jets
  • Plumbing Services, Nozzles & Bungs
  • Fast Lane T-Shirts & License Plate's
  • The Purge
  • Downloads
  • Video's
  • Contact
  • Terms and Conditions of Sale
  • Percentage Change Calculator