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Well i guess i didn't do my research on installing headers and sport muffler on my 2003 boxster . Headers came with to plugs in them i can take out , but that's not going to do any good with not having ordered headers without cats . Ive been reading about drilling out anti -fowl plug adapters and putting them into headers than screwing in the sensors ? Go ahead and tell me I'm going to have codes right ? Any reliable comments ?
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