MY350Z.COM

iTrader: (2)

Seems like all of the Japanese high-flow cats are expensive. PE is up in that ballpark as well.

SvR350z

iTrader: (1)

Let me see if I get this right.
1100 for nismo headers.
1200 for the nismo cats
900 for the nismo cat back
So 3200 bucks for a complete nismo exhaust that might deliever you 20 horsepower or so.
I know speed cost money but thats about insane.

Lawn Dart

iTrader: (4)

Insane - yes

Here is your medication -
$275 for Gruppe-s Y pipe
$200 for Helix test pipes

ZBoater

Well, those cats just recently came out, and yes, they are insane. I did

$900 for NISMO headers
$350 for Kinetix cats
$600 for NISMO headers (new off eBay)
$250 for NISMO intake

And got 267rwhp for $2100. Still insane.... but very satisfying.

jreiter

iTrader: (6)

Don't forget to add the Japtrix tapered midpipe to allow that oversized 3" Gruppe-s y-pipe to connect to the 2.5" stock 2.5" muffler correctly. Or you could get the Kinetix 2.5" y-pipe and keep the stock midpipe.

SvR350z

iTrader: (1)

$900 for NISMO headers
$350 for Kinetix cats
$600 for NISMO headers (new off eBay)
$250 for NISMO intake

So you got two sets of nismo headers?
Does that double the horsepower :P
Seriously, Why two sets?

ZBoater

1 set = two headers, one for each side. The set goes for about $1100 in most internet sites.

jreiter

iTrader: (6)

I think he was referring to the fact that SvR350z listed headers *twice* in his list.

sentry65

iTrader: (11)

so no pics?

Art Vandaleigh

iTrader: (16)

Id be very curious to see the flow numbers on these nismo cats vs crawford or kinetix, but as others have stated they are very high quality and are built to last as long as OEM cats (100k miles) which is why they command a very high price tag. Dealer prices on stock cats are extremely high for this reason.

fairladyZ in Japan

I have had the NISMO cats for over a year now -- which was part of the total JDM NISMO Sports Resetting package I had installed.

They are great .. not raspy (just a little when really powering up in 5th gear on the expressway) and there have been absolutely no problems.

Art Vandaleigh

iTrader: (16)

Fairlady do you have any pics of your car?

ZinMiami

iTrader: (2)

Actually, metal substrate cats are able to flow more than a comparable ceramic unit.

http://www.autocats.com/html/motorsport.htm

www.Gruppe-S.com now has metal substrate cats for under $500! I will be calling in my order on Monday.

cupcar

iTrader: (1)

I changed the exhaust to a JDM cat and header on my ITR. I installed the entire header and cat system including every cover, nut and bolt.

It all looked "factory", which it really was.

The cat passed visual inspection at the place I went to in CA and it passed the sniffer test as well so I was home free.

If the Nismo cats look "factory" to visual, which I doubt would happen if Nismo headers are installed as well, and the car passes sniff you would be home free,

If the car does not pass either inspection, you are screwed.

imalazeeass

iTrader: (8)

if your car does not pass when you try to go for a checkup, can you just put your stock parts back on and go for a 2nd test? Or are you screwed after your first attempt?

Z1 Performance

iTrader: (564)

so they flow more because a store selling them says so.....ok. Whether one does or not, the practical differences in performance are going to be negliable on an NA setup.

jreiter

iTrader: (6)

It depends on which type of test you have done. I believe you can specify that you want a test done off the record. You'll still have to pay full price for the test, but the results won't get reported whether you pass or fail. On the other hand, if an on-the-record test gets done, you pay full price and the results *do* get reported whether you pass or fail.

At least, I *think* that's how it works.

Brandon@Forged

Moved.

blu3design

I am in Georgia and will be moving to San Diego in a couple of weeks...By ordering the Helix High-Flow Cats are we saying that I will fail emissions in Cali when I move there?

G3po

iTrader: (8)

With Helix Cats in Cali , you most likely would still pass the sniffer (depending on other mods) and comprehensive portions of the test, but most likely would fail the visual (The Helixs visually look nothing like the 2 stage OEMs). It depends on how **** the inspector that day. Keep your OEM Cats to CYA.
It only takes about an hour to swap em back, even though the top front mani bolts are a biatch to reach.