I installed my mopar long tubes on my truck last weekend . I used the 02 extensions , header bolts and header gaskets , heat sleaves from Tony. The headers came with mid pipes with high flow cats so my factory ones are out . Now just the cat back is factory . But i have a check engine light the codes are P0031 P0152 P0158 . . What can i do to take care that ? a tune ? . . . . Note i have barely any mechanical skills