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Old 03-11-2009, 12:29 PM   #30
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Join Date: Jul 2008
Location: CT
Posts: 183
My Ride: 04 330Ci, 00 323it
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I'm sorry Ash, but I don't agree. I have seen a case study where they did a flow bench analysis on stock cat vs high flow vs no cat and the difference between high flow and no cat was a mere 2 hp!
I actually want to do a comparison dyno of before the headers and after i install the headers with cats.
If someone can prove me wrong with actual numbers and not butt dyno...I'll believe it then
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