iosigma

My 02 Z-28 starting throwing a code today, so I took it and had it check out. The right side cat was throwing the code(meaning it's going bad). The guys at the shop said it would eventually have to be replaced. I check on a price for the part at my GM dealer and they said it was $442.00! My car has 83,000 miles on it. The guy at the sales desk said he would cut me a deal on the cat. $376.00 (whole sale cost) If I decided to replace it. My question is this; Should I wait till it goes bad and replace it; replace it with an after market set-up;reaplce the exhaust from the headers back? Any help or suggestions would be greatly appreciated.
Thanks
Tom

2001NBMZ28

Damn, could've gotten a free one if you were under 80K. Was it P0430? Outside chance it could still be a bad/leaking 02.

Louie83

iTrader: (3)

DEFINITELY replace it with an aftermarket set-up, that is insane for a stock cat.

You can get Pacesetters and a catted Y for a very reasonable price. Put your $376 towards that and you are almost already there.

HeapaShifter

iTrader: (2)

You should replace the exhaust with aftermarket from the headers back.

Jon B.

iTrader: (5)

I might be in sorta the same situation. My car recently started throwing P0420, and i'm still hoping that is is just that O2 that is bad. If it is the cat it sounds like it is header/ory time and just get rid of the rear O2s and the cats all together. My car has under 80k though, so we'll see I guess.

Jon

brad8266

iTrader: (23)

****, **** the cats, just get the cat code deleted out with tuning software.

davered00ss

iTrader: (4)

First off, Emissions equiptment is warrantied fro 96 mo / 96K. If the dealership told you you need one they should replace it under warranty.

Second, It is probably just a bad rear O2 sensor.

Third, Good excuse to get a set of Kooks long tube headers.

LS69TA

iTrader: (30)

If you don't have to pass emissions, I'd just gut them and put some $50 o2 sims on it.

Danny2tek

iTrader: (1)

iosigma

Is there a good catted "y" pipe that I can replace the stock setup with that will work with the stock headers? If I can do that I think I'll go ahead a replace the headers back. Suggestions? Need to try to keep the cost down as much as possible.
Thanks again for your replies thus far.

Cakes

iTrader: (1)

iosigma, Stainless works makes a catted y-pipe that is a direct replacement for the stock cats/y-pipe. I believe it is around $600 or so and comes with Random Technology cats. Other than that MagnaFlow makes replacement cats for our cars and I believe that Random Technology may make a set but I am not 100% sure. For around $1200-1400 you can do a set of 304 stainless headers (Kooks, QTP, Stainless Works, Dynatech) with catted y-pipe that will run just as clean and give a nice kick in the pants gain. I have a pretty bad rattling passenger side cat that I am having the dealer look at tomorrow. Hopefully they will fix it free of charge due to the fact I have under 80K on the car. I then will be considering one of the header systems mentioned above.

iosigma

Today I called a friend of mine about the cats to see what he could do about the price. He works in a muffler shop. Anyway while we we're talking, I remebered that my security fuel shut off had kicked on a couple of days before. The resistor in my ignition key wasn't registering with the car. Anyway when this happens the fuel mix is shut of from the engine and the engine shuts off. I starting to think that the fuel shutting off leaned out the mixture to the engine when the exhaust hit the sensor it threw a code thinking there was a problem with the exhaust. The security code threw right before the cat/o2 code. I think they might be related. I have driven the car for two days now with out a code and or secuirity problem. Time will tell i guess
Thanks