LTFT Setup

LTFT Setup (Long Term Fuel Trim)

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  • LTFT Post Start Lockout - Delay in which LTFT can become active after start up
  • LTFT Min Eng Temp Lockout - Minimum engine temperature for LTFT to become active
  • LTFT Max Eng Temp Lockout - Maximum engine temperature for LTFT to become active
  • LTFT Min STFT Lockout (+/-) - The minimum STFT allowed before LTFT can start correcting
  • LTFT Update Rate - Update rate for LTFT
  • Long Term Gain - Percentage of STFT applied per second

** For STFT Lockout -

Min STFT Lockout = +/- 2.5% The LTFT will start operating when the STFT is greater the 2.5% or less than -2.5%

** For Long Term Gain -

The Gain is percentage of the short term trim applied per second.

Example: Short Fuel Trim = 10.00%

Long Term Gain = 2.0%

Long Term Fuel Trim = 2.0% of 10.00% per second

Long Term Fuel Trim = 0.20% per second