I have an ‘08 Redline, 34K miles. Check Engine Light always comes on after reset. Takes about 60 miles of driving. Code shows all cylinders misfire at low RPM. Code clears when aggressively driven. So far...new AC plugs, 4 new coils, intake induction cleaned, fuel additives, new gas cap, same code appears. Also did a smoke test for leaks. Nothing found. Kind of frustrating. Any help is appreciated.