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114 Posts
ok, ever since i installed my o/r x pipe my check engine light came on, so i went an got mil eliminators, which did not turn the light off. so i took it to autozone to have the check engine light tested an it had 5 codes 1) p1131 2) p0136 3) p1151 4) p0420 5) p0430. this is where it gets weird i get god awful gas mileage above half a tank of fuel and at half or less i get normal gas mileage and i have a miss every once in awhile. the plugs and coils are new can someone please help