nplsdvr

98 civic ex - d16y8

CEL is giving me a P0420 code (Catalyst System Efficiency Below Threshold)

1. does that absolutely, positively mean bad CAT? Could it be a bad sensor (secondary o2 sensor, right?) in the CAT? How could I test the difference?

2. shopping for a new CAT - every website seems to have the same stuff and the same price range: $131 - $550. How do I know I'm getting the right one? I'm pretty sure I want the one with the "2-Bolt Welded Type Inlet, 3-Bolt Welded Type Outlet" just for simplicity sake, but what about brand? There's Eastern, Cato, Magnaflow, DEC, Bosal, etc. etc.

Any suggestions for brand or where to get it? Any advice what to look for or avoid?

Thanks!

Luis998

I would personally go for OEM, unless you wanted aftermarket. Try checking out www.hondapartsonline.com That's Majestic Honda. They have some good stuff there. Best of luck and also, let me know what you find. I "may" have to replace my cat when I build my Y8 and turbo it.

__________________
Max? There is no max. Max just means you gave up.
This is my thread: http://hondaswap.com/engine-building...g-wind-110848/

http://hondaswap.com/members-lounge/...thread-278554/

eg6sir

if not replaced by OEM i'd go with a magnaflow high flow or catco .. basically the same thing

__________________
DO NOT PM ME WITH TECH QUESTIONS!
XGT: cEElint

nplsdvr

Majestic was the first place I looked - not a cat on the list.

*NQO'TD: How do I know an OEM cat from an aftermarket cat? Or any other part for that matter? Brand name = aftermarket? How is an OEM part listed?

Thanks, Luis998




*Noob Question O'The Day - I claim "Noob Immunity"

eg6sir

personally this is what i'd go with
eBay Motors: MAGNAFLOW CATALYTIC CONVERTER 96 98 HONDA CIVIC 53034 (item 230269788525 end time Aug-08-08 00:49:32 PDT)

__________________
DO NOT PM ME WITH TECH QUESTIONS!
XGT: cEElint

nplsdvr

Thanks eg6sir!

That is one that's going to have to be welded right? That one doesn't come with the "2-Bolt Welded Type Inlet, 3-Bolt Welded Type Outlet" does it?

eg6sir

any muffler shop could weld some flanges on it for $20-25

__________________
DO NOT PM ME WITH TECH QUESTIONS!
XGT: cEElint

phyregod

__________________

robertbergl@hotmail.com

^

91accordwithwork

haha i (above)

i think my cat is going to

if i have a perfromace exaust but a stock cat, would a magaflow fit everything if i got one? because im not sure the size of the stock in and outlets?

__________________
heres my mod. list


-painted valve cover
-new headers
-new high flow obx resonator
-new carbon fiber exaust tip
-new p.s pump
-new radiator
-new belt
-new injen ram intake
-new strut bar
-new deck (installed myself)
-new speakers

-not bad for learning as i went and not having shit for help besides u great guys

i think thats around all i did, tok a few months but im happy with it!

and after all that theres a small puddle of oil under my intake on my engine.....
the fun never ends!

Z6CRX

beat me to it.. i was going to post that when i saw the title.

__________________