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Old 05-23-2002, 12:58 PM   #8
Member#: 14110
Join Date: Jan 2002
Location: Hollywood where girls have fake boobies
2002 2002 WRX
Swirly Black


You do not have to retain three cats just one which can be high flow, the mnifold ends at the up pipe so the up pipe is replaceable, basiaclly you only need one cat that is usually a high flow racing cat placed in the down pipe. Tha t should answer your question.
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