headers. h/f cat necessary? - FirebirdV6.com/CamaroV6.com Message Board

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headers. h/f cat necessary?

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  • headers. h/f cat necessary?

    if i got some pacesetter headers and got them installed, would i need to do something to my cat in order to get the full gain/sound? i have heard that you can damage your car's pcm by removing it and the SES light being on can alter a/f ratios and etc.. etc... but what would be wrong with just leaving the cat and I pipe?

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