felt no different to me
The car runs a lot better and feels faster after I top here with 1-2 tanks of premium. I think the ecu adjusts over time.
2010 Hyundai Genesis Coupe 380GT
M&S Type A Front Grill
KDM 380GT Emblem
Korean Custom Wing Badge Emblem
Injen Cold Air Intake
SuperLux LED Tail Lights
O.Z. Ultraleggera 18x8F/18x9R
E&G Classics Full Aero Kit
felt no different to me
2011 Genesis 2.0T R-Spec White