DIY cat and crossover replacement?
Thread Starter
Racer
Joined: Oct 2011
Posts: 265
Likes: 5
DIY cat and crossover replacement?
I've searched for hours but can't quite find the answers I need for this, so I'm appealing to the many experts here.
In my 02 Z06, at least one of my stock cats is going bad--got the P0420 code and a rattle--but I'm afraid I must have working cats for a while longer. If I replace my stock cats and my stock h-pipe at the same time with aftermarket high-flow cats and an x-pipe, is it just a simple bolt-on swap? No welding or cutting or anything challenging for a guy who can barely tie his shoes? (Okay, I'm not that bad.)
If so... What do I need? High flow cats, an x-pipe from a reputable brand, and that's all? Do I need extra lengths of pipe to make things fit? Do I need to salvage any of the stock pipes (e.g., in front of the cats)? What cats do you recommend for maximum flow but still pass emissions inspection? Or am I going to need a shop to install/weld the cats after all?
Thanks, all!
In my 02 Z06, at least one of my stock cats is going bad--got the P0420 code and a rattle--but I'm afraid I must have working cats for a while longer. If I replace my stock cats and my stock h-pipe at the same time with aftermarket high-flow cats and an x-pipe, is it just a simple bolt-on swap? No welding or cutting or anything challenging for a guy who can barely tie his shoes? (Okay, I'm not that bad.)
If so... What do I need? High flow cats, an x-pipe from a reputable brand, and that's all? Do I need extra lengths of pipe to make things fit? Do I need to salvage any of the stock pipes (e.g., in front of the cats)? What cats do you recommend for maximum flow but still pass emissions inspection? Or am I going to need a shop to install/weld the cats after all?
Thanks, all!
Burning Brakes
Joined: Dec 2003
Posts: 1,243
Likes: 5
From: Loveland CO
The Magnaflow one will need to be cut and welded in, i also heard that it doesnt fit quite right and has to be tweeked to fit. Might find a used set locally on CL and buy it, direct swap. Universal weld in cats you will need to have universal ones cut and welded in to the stock pipes, any good muffler shop can measure to see what you can fit in the stock location.
if you find a setup with flange to flange then it should bolt in with simple hand tools like this one:
Non Z06
http://www.ecklerscorvette.com/corve...1997-1999.html
Weld in Magnaflow (have to cut and weld to stock Hpipe:
http://www.magnaflow.com/02catalytic...irectfit=51397
if you find a setup with flange to flange then it should bolt in with simple hand tools like this one:
Non Z06
http://www.ecklerscorvette.com/corve...1997-1999.html
Weld in Magnaflow (have to cut and weld to stock Hpipe:
http://www.magnaflow.com/02catalytic...irectfit=51397
Last edited by RedZMonte; Mar 2, 2015 at 06:46 PM.
