best way to fix the cats

**brushrunabout** · 08-01-2006, 03:30 PM

Well my 2000 ss M6 hit 82k. Now started to get codes P0172, P0175 and P0430. I had this happen about a year ago and finally traced it to a vacum leak in the cheap hose bewteen the PCV and throttle body. 5 cent hose fixed it.

Now the codes are back and I d'ont hear a vacume leak. Doubt both O2s would go out together. I did run a tank of Tecktron fuel injector cleaner and the codes showed up at the end of the tank??

If I can't clear the codes what is the best way to gut the cats and maybe but in a basic nitrus system. Is it hard for a very basic system? Car is totally stock and runs 22-24mpg so can't be too rich. Best track time a couple months ago was 13.999 with stock car and "touring commuting tires"

Now it is getting a little older I think I need to take it up a knotch. Can $600 do it if I do the work myself?

Jim in Mi

**jmhvenom** · 08-02-2006, 05:01 AM

600 would get you Pacesetter headwers and off road ypipe... no more cats.

**ninobrn99** · 08-02-2006, 10:35 PM

true or you can find a ypipe from a stocker cheap and use that as your replacement, but id go for the LTs

**0rion** · 08-02-2006, 10:48 PM

I would doubt your cats have anything to do with rich codes. I would assume you have something else going on there. Is the car missing at all? Any mods?