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Old 03-11-2009, 09:45 PM   #32
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Originally Posted by kraimer View Post
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
Depends on the cat, but you don't get much power from the headers in the first place, so even 2hp loss is a lot.
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