Quote:
Originally Posted by gerno
Is there any issue with exhaust flow in using a pipe like this or a full rectangle vs oval or round? I like the idea, especially after trying to run my exhaust this week. It's almost impossible to get that stuff tucked up.
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As far as shape with the transition from collectors (round) into a sort of "D" section, all I can find on the subject, technically, says to have the "D" section at least larger than the round section, in an ideal world of course.
My math shows this:
3.5" round = an area of 9.62 sq inches
2.25" x 5" "D" = approx 9.06 sq inches (it's not a perfect semi-circle D shape as you can see in the pics)
So, essentially, it's close enough by my estimation.
If anyone sees my math wrong, please share your thoughts.