What Are Test Pipes?
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Re: What Are Test Pipes?
Test pipes are pipes that remove your main cats. It is not necessary to replace them if you just want a cat-back exhaust.
to my understanding:
Downpipes = replace your pre-cats coming right off the turbo
Testpipes = replace your main cats
Catback Exhaust = self explanitory
Adam
1996 300Z TT
to my understanding:
Downpipes = replace your pre-cats coming right off the turbo
Testpipes = replace your main cats
Catback Exhaust = self explanitory
Adam
1996 300Z TT
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