chip? tuners?
what if any chips are good and what if any tuners are good. do thay boost up mpg? a friend has a chip and it destroyed his co2 sensors and burnt up his cats so please a little help here thanks all i dont want to be like my friend
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Jay's
09 XL reg cab
L4 2.3 , 40 series flowmaster , tinted windows 5% back 35% sides ,muffler removed from air box mod ,and ac on off switch mod , blinker mod, avs window vent shades
coming soon! k&n drop in/fiberglass bed cover/bed sprayed liner
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