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Old 12-16-2009, 11:04 PM   #12 (permalink)
kannibul
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Quote:
Originally Posted by ChrisSlicks View Post
Volume of 2 x 2.5" exhaust is 9.8 sq/in.
Volume of single 3" exhaust is 7.0 sq/in.

The dual intake / dual exhaust will carry more air mass with less restriction than the single exhaust on your supercharge 4-cylinder did, regardless of boost level.
Yep, there's basically one less cylinder involved per header.

Inline 4 cylinder = 4 cylinders into header @ 3" = .75" per cylinder
Half of a V-6 = 3 cylinder into header @ .75" = 2.25"
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