If you remove the cats or get high flow cats then yea. You would need to upgrade your tune to get the most out of it and specially turn off the check engine light that you'll probably eventually get. If you're just adding resonators and such then no worries.
That'd make sense. It's just that I'm on the fence with what I want to do after I swap axle backs and put in the magnapacks because I'm really curious to hear that setup in person. I see where you're coming from though.
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