Nismo Cat Back + UR HFC = FAIL
Originally Posted by SuperBlack350z
that definitely wasn't the problem for me. my flex pipes cracked so i bought and put on a stock ypipe, then one week later, my test pipes cracked. All i can say is that it's well worth it to have testpipes/HFC with the nismo though. The sound is so amazing. I get countless of compliments. Just make sure you have spare oem cats so you can ship in your test pipe/HFC for warranty work when they do crack. 
Originally Posted by WalkerT
The Brackets are on the new exhaust because of the CRACKING problem. Nissan fix but all the people with the old style are a$$ out.
Originally Posted by DMK
Which brackets are you referring to? Which pipe are they located on?
what year did they start that? i bought mine during the winter of 07. I only have one pic of my y pipe but its blurry and it seems to have the little piece welded on but im not sure
Originally Posted by Nexx
you havent been around long enough to know but the nismo exhaust is notorious cracking test pipes, hfcs of all kinds.
Back from the dead! Well now my URC Cats have cracked - well at least the passenger side one. I have a half penny size whole in one near the mounting point. I think it may have already been cracked and stressed from my original devil Nismo y-pipe and the fatigue finally got the best of it.
Pics:


Decided to just replace these with Berk test pipes.
Much happier now - not much rasp and no CEL
Yet.
Pics:


Decided to just replace these with Berk test pipes.
Much happier now - not much rasp and no CEL
Yet.
My Berk's cracked in the same spot w/the Nismo exhaust. I put the OEM cats back on, I'm tired of dealing with cracking exhaust parts (broke 2 sets of Berk cats, and 1 Nismo Y-pipe).
I'm willing to bet the Nismo y-pipe is the source of aftermarket HFC's cracking as well. I had the "reinforced" Crawfords fail on me after only 3 months, and the same with the Berk's, both in the same spot too.
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