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
1991 Isuzu Impulse RS (parts car)
1993 Asuna Sunfire (parts car / stripped)
2007 Ford E-250 (work truck)