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Seems that most of the restriction is on the cats -- so any of the three options (N55, MadDad, Berk) will likely get the lion's share of flow.
That being said, there may be some advantage to Berk's (and maybe MadDad's though I haven't analyzed theirs too closely) pipes having two straight resonators instead of the N55's one. How much more restriction that gets rid of is anyone's guess. Seems like it would be minimal...
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Last edited by icabod7; 10-26-2011 at 04:26 PM..
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