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Originally Posted by SS_Firehawk
Not 100% sure yet. The Tanabe portion actually goes down to 2.75". I do know these superchargers like a bit of back pressure to get into it's efficiency range, but I'm a bit worried about the top end restriction. If need be, I will either swap the whole thing for F.I. with the small cats or maybe just the mid back section. Idk how much these Y pipes can flow.
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I don't think S/Cs need any back pressure. They aren't turbos...
It'll probably be best to go catless and live in the 50's