What Does The Small Pipe From The Lower Intake To The Main Cat Do?
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What Does The Small Pipe From The Lower Intake To The Main Cat Do?
what does the small pipe from the cat due on an S5 motor? i know it controls the aux ports on an s4. would it be ok to remove it and not lose power?
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The catalytic converter needs that pipe. If you leave it off or disconnected it'll ruin the catalytic converter over time. They cost a lot plus a ruined catalytic converter will clogg up and reduce hp.
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