DA WINNA !!!!!
Replaced the cat.. the old one was empty.. nada.. nothing in it.. did the test day after the cat change ( cause they said the Cat needs to work in so couldn't do it then and there ). So I have an empty cat sittin at home waiting to go back on when the emission gets removed 4 years later . Will take pics of the empty cat and upload it this weekend. The bottom end with the new cat is much smoother.. no hiccups/misfire feeling cause of backpressure.. but the top and mid-range is gone.. I don't hit as high of a boost anymore.. but it passed so thats all that matters for now..

Thanx for all the help guys.. I learned a lot bout emission and CO/ NO reading meaning what.. the CO passed by 0.01 so I think I"m running rich, but I think that is contributing maybe by my T-stat.. running 180.. it heats up quick like normal.. but when I drive, it always is @ 1 notch lower then 90C.. and only get that high if I sit and idle for close to 10mins or so..

wats wrong with my cat?

Glad I could be of service!!

Someone did a good job of hollowing that sucker out.

Well.. yesterday I pulled off a side of a road when I was on a highway ( off ramp then road ) and I had something flying around in my trunk so I went to secure it and notice a smell of rotten eggs. .. if that serves me correct that means a CAT going bad.. but the new one has been on for maybe 2 weeks
When I got home.. I put my nose in the exhaust *cough *cough and didn't smell it.. I wonder if it was going bad.. could it be caused by the fact I had to get on the gas to get up to highway speed ( then pulled off the next off ramp )
I think it could also be cause I'm burning rich cause my car is usually on the mark just before center 90C so it'* roughly about 77.5 C. I don't know what that would be in Faranheit.. but I think that could be causeing some issues.. I'm contemplating on changing the T-stat.. but at the same time with the hot summer coming.. maybe the old shotty T-stat would help keep the car EVEN MORE cooler then a 180 T-stat.. no thrown codes or error coming up that I'm aware of.

That smell is often associated with a new cat. It'll go away. I had the same experience.

You were running rich with no */C and a new cat, so you may have shortened it'* life...

No.. The */C has been on for a while.. it probably contributed to my home made honed out CAT ( see pics above ).. when I put the new one on.. the */C was running. I didn't know new CAT was suppose to make that smell.. so I was freakin out thinkin great.. now I got to go back and sit around at the shop for a new CAt.. figuring out how to prevent and if I need to argue about the cat being faulty...

Anyone know the Celcius to Faranheit conversion?? Whats 77.5 Celcius converted to Faranheit? ( Just want to know what My car is running temp is right now

171.5

a °C = [32 + (9/5)a] °F

Kewl.. thanx.. so my 180 Stat some reason is opening up earlier and or the fact I don't have the bottom rock guard and shield cover is allowing more air to cool down the engine.. humm.. I know there'* discrepency as to wat the optimum range is for the 3800 L67... anyone know wat it is??

I remember before it was around 160-220 F.. but recently reading other posts it says 200-220F. ( which I think is too small of a optimum range )

Hey, that hollowed out Cat looks just like mine installed in my car (no emission tests in Nova Scotia ) The optimum range in my opinion for this car would be between 185-220 degrees F. Really anything much lower and the computer is going to run rich to warm the engine up and anything hotter...well we know.