This is what I cme up with for system:

[SexySixer707]

I currently have:
1.Pacesetter Headers (ceramic coat)

Going to purchase:
1.Carsound cat part # 94139 with single O2 boss (not for cali), but I got the hookup. From FTPP
2.LT1 Magnaflow 3" Catback with S pipe from FTPP

Going to do Graymans Conversion. This is for a 99 Maro.I don't need a cat with an airtube do I?

How does this look?

[BLLDOGG]

sounds like a decent system that should work well. and to answer your question, no, you dont need the air tube.

[AZ3.8Camaro]

You don't need the o2 bosses in the cat. They are already IN THE TUBING for your exhaust. Explaining it doesn't seem to help, so maybe I can draw it...

1998 and up style.

............................cat................... 02 bung

_____________/---------------\_______| |_______

-------------\_______________/-----------------

1997 and earlier cars had 2.

......02 bung..............cat..................02 bung

_____| |_____/---------------\_______| |_______

-------------\_______________/-----------------


You will only be replacing the cat, so the o2 bung, pictured above IN THE PIPING, stays put. If you got ANOTHER o2 boss in the cat, you would have 1 extra.
JUST GET A REGULAR CAT, NO BOSSES, NO AIR.

Hope that helps.

[ November 22, 2005, 08:11 PM: Message edited by: AZ3.8Camaro ]

[articacid]

if you doing a hiflow cat you minds well not even waste your time on the 02 sensor as its most likely goping to cause an ses light and youll have to get a sim.

since you say that it comes with the s-pipe if the bung is in the s-pipe just use the sense to plug it up.

[SexySixer707]

Maybe I did'nt clarify. It is 99 Camaro V6. So this will be an upgrade. Of course. So the LT1 magnaflow (part # 15620) catback that I'm going to order from Ftpp already has a O2 bunghole( ...haha, bunghole..) in the piping? I did'nt see it in grayman's conversion. That's why he said get a cat with an O2 Bung.I'm confused.
So I have O2 bungs in my Right and Left Headers and my Y Pipe. Then I need one on the cat.
That being I don't need an O2 sim then? Correct?

[articacid]

you can put the o2 sensor in if you want, if you do it will still read wrong becuase of your high flow cat, as a result setting an ses light. only way to fix the ses light is an o2 sim.

[SexySixer707]

So I could just get a regular High Cat and a O2 sim and I'll be fine? With the other 2(pre cat) O2's and the sim I will not have the ses light on?

[BLLDOGG]

thats correct

[ramair6]

i have a high flow cat , magnaflow 3in/3out with o2 bung and never had a light come on. I installed it about 8 months ago too.

[ramair6]

also i am pretty sure the o2 bung is after the cat by the end of it , so its kinda near where the o2 bung was in the orginal s pipe , i also put a new s pipe in .

[articacid]

Originally posted by ramair6:
i have a high flow cat , magnaflow 3in/3out with o2 bung and never had a light come on. I installed it about 8 months ago too.

you just got lucky. some people never get an ses light, while the majority of us do.