90 CRX--test pipe question???

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ExplicitSnow

Senior Member
I'm replacing my catalytic convertor with a test pipe from www.kteller.com
My questions are-
1-what length do I need?
2-do i need a rear o2 bung?
3-or do i need a front and rear o2 bung?
4-or do i not need one at all?
5-should i get 2 bolt flange or 3 bolt?
 
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