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^^^ Uhhhh... what? If reducing exhaust pressure silences then full open with big pipes should be somewhat quiet, and it's not. You DO want to Y it down to two smaller pipes. I'd just figure the cross sectional area of the 3" and then split it down to two that add to about the same cross sectional area, but you could also look at system like Racing Beat makes and compare to see what ratio they used.
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He isn't a killer. He just wins -- thoroughly. 
'87 TII
240+ rwhp on my DIY streetport, ~13psi on stock turbo, Racing Beat REVTII exhaust 
rTek 2.1 awaits a tune
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Originally Posted by need RX7
This is why I don't do politics, it's just one stupid thing after another.
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360 gamertag: quick Tii
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