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1G Reinstalling a catalytic converter?

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underradar92

underradar92

15+ Year Contributor
1,002
20
Oct 19, 2005
Milwaukee, Wisconsin
I'm considering installing a metal substrate cat that I have lying about. I'm wondering if this will hurt HP a lot (most info is not conclusive) and if tuning will be drastically altered (I presume minimally?).

Has anyone done this and if yes, what sort of results/changes occurred?

Thanks,
Jim.
 
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