Originally Posted by 5LITER_MUENSTER View Post
I have a 2013 GT stock and I seen my LTFT go to 15% also depending on the weather and condition, but never pass that. I also thought something was wrong too since I'm used to no more than -/+5 adjustments in the past for stock cars usually but I guess this is normal.
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I put the stock tune back and my LTFT were slightly lower, so I guess it was normal then? Might be gas related (93octane from valero) or weather related (houston, tx)
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