I can't understand why anyone would think a "performance" chip would work?? If you could install something that gave you better MPG's and more power, do you not think Hyundai would have installed it when the car was built!?!?!
I have a rock that keeps tigers away, $375 + shipping, send me a PM if interested in buying it.
Former Hyundai owner, still here to help.
2011 Honda CRV (family mover)
1991 Isuzu Impulse RS (project)
1993 Asuna Sunfire (parts car)
2007 Ford E-250 (work truck)