Hi,
Car is a 06 6MT NA and all was fine until recently when i tried to do a WOT pull, i found my AFR went to 15.+ from about 3k-7k rpm after which it will settle to about 12-13. happened on all gears, day or night. No CEL. Cat deleted, RB air intake, BHR ignition.
first thing i do is the 20 brakes to reset the ecu but it still happened, found that my LTFT did not reset at all. next i disconnected my battery to reset and now my LTFT resets to zero and my mid rpm lean AFR doesn't happen anymore.
about one month later, the same thing happened again and true enough, i disconnected my battery to reset and all will be fine again.
what could have caused my mid rpm lean AFR? :dunno:
Car is a 06 6MT NA and all was fine until recently when i tried to do a WOT pull, i found my AFR went to 15.+ from about 3k-7k rpm after which it will settle to about 12-13. happened on all gears, day or night. No CEL. Cat deleted, RB air intake, BHR ignition.
first thing i do is the 20 brakes to reset the ecu but it still happened, found that my LTFT did not reset at all. next i disconnected my battery to reset and now my LTFT resets to zero and my mid rpm lean AFR doesn't happen anymore.
about one month later, the same thing happened again and true enough, i disconnected my battery to reset and all will be fine again.
what could have caused my mid rpm lean AFR? :dunno:
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