Header and manifold Thread

[DanGTP]

Apparently running without will cause your bumper to be discoloured near the tailpipes...

Wish I had known that before I removed my cat. Oddly, it's only doing it on one side, though. It rubs off, though.

[matt5112]

Stock catback? and what colour is it?

[blowfishRus6]

i dont have much of and issuie with the sut from running no cat. over a time you can notice it but it easily washes off.

stock cat-back on a white car. maybe after a month i can start to tell, but its nothing crazy. nothing i would write home about.

[nawarkk]

It's kind of cool and kind of dumb to have soot on your rear bumper.

Cool because people usually don't see that so to me, I think "oh dam this guy has something in his car".

But it is dumb because your car gets dirty. I'm gonna run a cat. Sould lower the volume of the exhuast note also.

[matt5112]

Or do what I do, run a rusting resonator and rusting mufflers.

The tips become stained its so rusty in my catback.

[Whitehispanic]

ok guys i have been reading this link and i am wondering what to do i just ordered my ssacs headers and i am looking to replace my cat because its not working properly i saw a cat Magnaflow catalytic converters - $59.99 in zzperformance. will this cat do the same as everyother cat out there because here in mass you have to go through inspection. my car is a 2004 gtp comp g

[matt5112]

Yes, but its not as thick as the stock cat so you might have to get a tune to make sure you pass emissions if they actually do a sniff test.

Other than that, it'll be more than good.

[TheOtherNick]

You should be ok with that cat.

[Whitehispanic]

this is a welded one right cause it does not look like a bolt on.

[DanGTP]

Stock catback? and what colour is it?

Stock Cat-back with Thrush turbo mufflers. It's a milky brown color.

[matt5112]

Stock Cat-back with Thrush turbo mufflers. It's a milky brown color.

Hows it sound compared to stock? Have a video?

[DanGTP]

I can get a sound clip if you would like, but no video other than my cell phone, and I'm sure it wouldn't be very good quality.

[Whitehispanic]

sorry to ask one more time if i get the magnaflow cat. what should i run from the headers to cat and cat to stock exhaust? because they offer 2.5 or 3 inch ?? i have 2004 gtp. i am not sure what if i need 2.5 in/out or 3 in/out.

[matt5112]

stock is 2.5 IRRC

[Whitehispanic]

how about the headers ssacs?? sorry again i just dont want to mess up ordering my cat lol

[nawarkk]

Yea I'm wondering the same thing.. 3in headers to 3in cat to 2.5in tubing? Or 3in headers to 2.5in cat to 2.5in tubing?

[DanGTP]

3" headers > 3" cat > 3"-2.5" reducer > cat-back flange.

Stock cat-back is 2.25", BTW, but the flange accepts either a 2.25" or a 2.5" mate.

[TheOtherNick]

^he is right. The headers come with the reducer also.

[blueguy]

Whats with all this cat talk?

Women

[OH4CompG]

I'll be catless next Saturday when I put my pacesetters on ;-)