NA Motor Discussions regarding N/A KA24E, KA24DE, and SR20DE

header - cat - exhaust issues

Old 01-21-2008, 05:47 PM
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Location: Manitoba
Posts: 52
header - cat - exhaust issues

so i have a hotshot header, and the outlet to the cat is 2.5 inches.

here comes the problem. i have a test pipe and an apexi exhaust that are 3 inches.

and the question is, are there any cats that start at 2.5" from the header and expand to 3" at the muffler? because previously i have tried to connect the 2, and experienced leaks at the joints.
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Old 01-21-2008, 06:17 PM
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Location: Kaimuki, Hawai'i
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You probably had crappy gaskets, I have no problems w/ my 3" test pipe meeting up w/ my stock header
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