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.
2007 Hyundai Accent
2004 Hyundai Accent GT
1991 Isuzu Impulse RS
2007 Ford E-250