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To disable LTFT when you have no O2 sensor or require it disabled due to large camshafts etc set the following 3 parameters. Set auF0165 LTFT Learning Max to 1.0 Set auF0166 LTFT Learning Min to 0.0 Set auF0170 LTFT Learning TPS Max to 0 counts Old method (does not work for all vehicles). auF0164 LTFT Enable should be all that is required to disable closed loop permanently. Set auF0163 to 4096 degrees. This will mean the O2 sensor is never "up to temp" and hence the O2 logic remains disabled. Or set the delay time to 1000000000 (this is actually clock ticks and not seconds) Or set auF0162 to 1000000000 for all temperatures. UPDATE: on FGs the best way is to just set the A/D Count to 0.0 on the Open Loop TPS Transition table auF0153 as the above tables have been reported to not work on FGs
