bad cat now what?
 

does anyone know a stock replacement cat for a 97 z28? I have a bad cat and can't really find any options except some overpriced places... any ideas?

what's the stock part # for maf sensor also? gotta replace that.

Re: bad cat now what?
 

cut it out and have a shop put a universal one on. Or don't run one at all...

Re: bad cat now what?
 

You have two cats.... which one is it - driver's side or passenger side?

Shoebox has a lot of part #'s including the latest replacement numbers for the MAF sensor:

http://shbox.com/1/Parts.htm

Re: bad cat now what?
 

If its a necessity then buy an aftermarket one. Pretty much anything with acdelco d.Delphi or gm is go ns be ridiculously expensive

Re: bad cat now what?
 

pass side.cat... what size are stock.cats?

Re: bad cat now what?
 

Unless you're handy with a welder you're going to need to visit a muffler shop. They're be able to provide you choices. I've got a Carsound Cat on mine but the part number is likely different for yours as mine is a single cat setup.

Re: bad cat now what?
 

I've still got my stock dual cat w/y pipe from when I installed my Kooks and catted Y pipe. They only have 11,000 miles and are from my '96 Z28. Let me know if you want to keep OEM cats on it.

Re: bad cat now what?
 

I'm looking at 2.5in cat for my car.. doesbthat sound right or is it necessary to go 3in?

Re: bad cat now what?
 

Please do not offer to sell or buy parts in the "tech" forums. If you want to help someone out with parts, send them a PM.

Re: bad cat now what?
 

Sorry

Re: bad cat now what?
 

CA has new cat laws: http://www.arb.ca.gov/msprog/aftermk...ftermktcat.htm

CA now requires certified cats or you will technically not pass the smog test (if they look and see a non-stock or non-certified cat, or a relocated cat, you are screwed). To make matters worse, I could not find a junk yard in CA which was even willing to sell me used cats due to the new law.

Your choices to be 100% legal are new certified cats (Walker was the cheapest I saw but do not know of their durability) or used GM on a forum or ebay. I found a guy in MI on ebay who had a dual cat setup he sold me (I have a 95 M6 which is single cat and went to duals so I could use a set of SLP shorties, and even though I will now run cleaner, my car is now illegal.)

Re: bad cat now what?
 

summitracing.com/parts/WLK-81907


What size are the stock cars? 2.25in to 2.5out?

Re: bad cat now what?
 

That's what I measured pipe OD on the pass side dual cat that I have, not sure what year my exhaust is but it is OBDII as it had post cat O2 sensors. I would double check for with Walker over the phone as their page has the 81908 as both sides which we know is wrong. http://www.walkerexhaust.com/catalog/ecatalog_CARB.asp Don't you love all the BS we go through here in CA while everybody else does full headers and true duals.

Re: bad cat now what?
 

http://www. summitracing.com/parts/MPE-34026


Would this work? An exhaust shop quoted me $230 for install but can get this same cat for $94 and I'm reading applications say its for dodge on summit but they sell these cats universal on magnaflows site

Re: bad cat now what?
 

I think Imma spend the extra and get that walker 81908... seems like a direct replacement on our cars... and 2.5 in and out can be welded fine I believe. The other cats I found were 16-17in in length and these walkers seem like legit options to replace stock cats... yea??