questions about headers and cat
#1
questions about headers and cat
I have 2.25" piping from the cat back. I currently have a JDM Type R 4-2-1 header on with a test pipe. The actual collector inside diameter is under 2.25" is it not? I know a lot of people are running this set up, so what would be the best size cat to use for this application to provide the best flow?
#2
Because of the anti-reversion chamber in the Type R header, is this a better choice for my 2.25" piping over a true 2.5" header collector (such as Vibrant), since this is basically the stock setup for a JDM Type R?
#4
i thought the JDM type r header was a 4-1 design with a 2.5" collector (inside diameter of course)...pretty much the same as a mugen...if you want less restriction, go with the same size are your collector/piping, cuz the smallest point will negate any effect a larger pipe will have on flow...
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