i have a bad catalytic converter on the passenger side, now should i go with headers with highflow cats, or just replace it with a stock cat?

 

depends on your state laws if you are part of a state that doesn't do emissions then do high flow or non, if you are in a state like i'm in then i would do stock or high flow.

 

You are in the same situation as me. My cat is starting to rattle and threw a code the other day. But it is not to a point where it is terrible and embarrassing. Just WOT and sometimes just idling I can hear it. I'm gonna wait till tax time next year and do headers.

 

When mine went bad, i had it gutted. Luckily i dont have smog checks

 

The dealer replaced mine for free b/c of a recall or something.

 

When my drivers side cat went on me, I did an O/R Y that bolts to the stock manifolds. I can't stress or preach enough on how big of a mistake that was. If I were in your spot I would deal with the bad cat for a little while until I could do headers.

 

The dealer replaced mine for free b/c of a recall or something.

 

Well if i do headers, i think ill go short tube since i want more tq then high end... So maybe for now just get hf cats, any ideas where to get them at a good price?

 

Is there any benefit to getting say ls2 or ls7 manifolds? Or is it just Worth getting short tubes?

 

Shorty headers aren't worth a **** - long tubes show gains everywhere. 01/02 LS1 manifolds are essentially shorty headers to start with, and they're only very marginally better than earlier stock manifolds.

"High-flow" cats are the exact same thing as stock cats in a different shape; they don't flow any better or give any power gains over stock cats. If you go with LTs and don't want duals, you can get catted y-pipes from some of the vendors. If you want to keep the stock manifolds for now, you'll either have to troll the FS section and ebay for a used stock cat, or ditch the stock y-pipe and cats, and get a catted y designed to mate to the stock manifolds.

Your best bet, money-wise, is just to find a used stock cat and replace the bad one you have; your best bet, money- and performance-wise, is to get a set of long tubes and a catted y-pipe.

 

Jegs sells high flow bullet type cats for like 80 bucks.

 

as stated above. if the law permits then i dont see why not going long tubes with or without cats.

 

its not the law im worried about, i just dont have the 1200 bucks for headers right now, i need to focus more on the suspension first...

 

1200 bucks? Where are you looking? Have another look:
http://www.jegs.com/i/BBK-Performanc...rentProductId=

 

wow i didnt even see those...i was looking at the slp and kooks etc... so if i get these, ill have to get two weld in cats correct?

 

damn good deal here http://texas-speed.com/p-294-paceset...e-package.aspx

 

You can do 2 things:
You can put 2 of them, one on each side on the y pipe right after the header.
Or 1 cat after the pipes join.

Either way will work but the 2 cats will probably flow better, but not enough to make a noticeable difference. If you're on a budget then the 1 will work just fine.

Be sure to pick up the wire guides and some good header bolts too.

 

How many miles on the stock cat before it took a dump?

 

For me, it was only 46k miles. Didn't throw a code till 52k. Cleared it and never came back on. It still rattles alittle at idle and under WOT.

 

what year is the car? i believe it was 2002 that had a tsb on it that allowed the cat warranty to go up to 100,000 miles instead of 80,000 as long as it is throwing a 420 code.