Thread: OEM catless vs. aftermarket up pipe DEBATE
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Old 2010-03-26, 02:01 PM   #20
sperry
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Real Name: Scott
Join Date: Nov 2002
Location: Portland, OR
Posts: 20,335
 
Car: '09 OBXT, '02 WRX, '96 Miata
Class: PDX/TT-6
 
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Originally Posted by WRXlerate View Post
This is a great place to ask:
Does anyone know what the best uppipe would be to mate with a GruppeS UL header. I have not put the header on yet and now after reading this I think I should upgrade the uppipe as well. I would like to avoid the "flow killing step up/down". Does anyone have any aftermarket uppipes off their car I could take a look at? I do plan on staying with a stock mounted turbo. Curious about the Cobb Inconel, are they worth the price? Grimmspeed..? I think Perrin has a specific pipe size to minimize loss of velocity...
I ran the Perrin UP on my car when I had those headers. It seemed good, but I couldn't quantity it since I changed a ton of other stuff at the same time the headers/UP went on.
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