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Discussion Starter · #1 · (Edited)
well i was wondering. would i pass immissions for some place else with my first cat, the one right on the header gutted?, or for that matter with headers, im 97 by the way 2 other cats.

but keep in mind i would swap back on the two other cats, plus the EGR.

just how important is that cat or can i nock it out and be fine?
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