James hadley Posted July 15, 2018 Share Posted July 15, 2018 Hi I recently became a 2016 Subaru STI owner, standard with no mods.. I went away on holiday for 2weeks and come home to a flat Battery, my boy left my interior light on.. so I removed the Battery and recharged it overnight, put it back On everything is working as it should no errors or engine lights etc, but when I drive it it seems to be a lot slower from what it was before the intelligence sport and sport# modes all feel the same power?? I’ve heard the ecu has to relearn? Is this true? How long does it take? Or is there something I need to do that can help reset it back to the way it was before?? Quote Link to comment Share on other sites More sharing options...
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