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Quote (Foxcolt @ Dec. 11 2002,09:16)</td></tr><tr><td id="QUOTE">Right Eric, that would make sense on an NA car. But from my understanding any backpressure on a turbo car would only hinder performance and from looking at the N1 Dual all I saw were more reasons to create turbulance.</td></tr></table><span id='postcolor'>
Jed, there is only *one* spot where the flow splits into two pipes. And then after that, you go from one 80mm pipe, to two 60mm pipes (ok, they taper, but forget about that).
The sectional area of the 80mm pipe (same as N1 single) is:
pi*(40^2) = 5026mm^2
The sectional area of the dual 60mm pipes is:
(pi*(30^2))*2 = 5654mm^2
I'm not saying that this is all the calculations that need to be done...physics play a
big role here. I'm just saying that you're not losing flow area...infact, you're gaining 12%. I'm going to wager a guess that the 12% gain in area will offset the losses in laminar flow.
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Quote </td></tr><tr><td id="QUOTE">FROM APEX'I WEBSITE:::The N-1 Dual piping splits into two smaller diameter pipes just after the catalytic converter and flow into a pair of 120mm canisters. The canisters are polished off with aggressive 90mm tips. The use of smaller piping diameter helps retain more mid-range torque. The Dual N-1 does not sacrifice peak horsepower because the dual pipes can handle more exhaust gas volume.</td></tr></table><span id='postcolor'>
Eric