OCG35

iTrader: (2)

your "cracked" cats would get along great with my "heroin'd" dogs

Sleeping Booty

shiiiit, i have a nismo exhaust on my 07 w/ stock OEM cats and i have had to replace the cats twice now due to cracking at the welds.. dealer says I am the only one out there w/ this issue.. =/ interesting! HA!

all replaced under warranty, have never bottomed out my car. both have maybe gone.. id say.. 10k each before having to be replaced.

was starting to think replacing them with an aftermarket setup could possibly fix this issue... lol but I guess not! =P

singh

iTrader: (2)

Wow. First time I ever heard Nismo cracking stock cats..

It's hard to believe b/c when you look at OEM cats, they look INDESTRUCTIBLE..

tylerxfire

iTrader: (15)

sup dude, im the one that was talkin to you on youtube

singh

iTrader: (2)

Hey, so did you choose an exhaust system yet?

tylerxfire

iTrader: (15)

ive had my nismo cat-back on a while, but i just ended up ordering berk high flow cats. Ive heard lotts of good things of the new version not cracking.

gonna be doing headers but not till i save enough to get the crawfords and get cams at the same time. . cams and headers and tune=

scmtkings4

iTrader: (4)

^^^actually i think of i heard of 2 guys on these forums that cracked the new berks as well

tylerxfire

iTrader: (15)

yeah i know but they are the best bet i think and they offer a year warranty so. . and sounds great

350z07

i have nismo exhaust...but stock cats...debating on which hfcs to get..everyones talking about having theirs crackedddd should i just keep my stock catsss? lmaoo or test pipes?

tylerxfire

iTrader: (15)

if anything i would go with berk high flow cats, test pipes in my opinion are too raspy sounding and just don't keep the clean vq sound you get out of the nismo. . and berks have the new support brackets that are supposed to help with the cracking

gennosuke1

iTrader: (6)

wait im kinda confused so nismo exhaust with stock cats will cause it maybe to crack or is it if you get HFC?

has anyone experienced any problems with nismo catback and test pipes?

Steve-O Z33

iTrader: (10)

So how exactly do you know when you've cracked a cat? Sound and CEL? Just a bad sound? I hear a rattle occasionally on my car right before 3k RPMs and I have been told that my IMR y-pipe may have cracked my cats, since it's similar to the Nismo.

gennosuke1

iTrader: (6)

^^ the rattle on my car was becuz of oil consumption..

singh

iTrader: (2)

Nismo won't crack stock cats. They are virtually indestructible. I have never heard of anyone cracking their stock cats, except for the guy a few posts above..

Nismo with HFCs is a different story. Many people have reported cracking by pairing HFCs to Nismo exhaust. But my HFCs haven't cracked..so I guess it's either hit or miss by pairing HFCs to the Nismo exhaust.

gennosuke1

iTrader: (6)

what about test pipes (helix) how can you know if they are cracked? the person that installed it said there is no problem but i think it had has around 10k on it

tylerxfire

iTrader: (15)

check them, get ur *** under your car and check them basically

gennosuke1

iTrader: (6)

lol^^ where would there be a crack? middle or

sorry i never had test pipes befroe...

tylerxfire

iTrader: (15)

hard telling. . just jack it up and check them over, usually cracks occur near the brackets on them i believe. . what kind of test pipes, is there any flex?

Steve-O Z33

iTrader: (10)

Seems like you'd either hear them leaking or have a CEL, right?

tylerxfire

iTrader: (15)

i would def. hear the difference, and yeah seems like it would throw a code as long as you alREADY had defoulers