i am looking for a good header for my 2006 TC and i dont know what is good and what isnt? i am looking for a power gain, but nothing illegal...any help?

 

You live in CA... no, nothing is legal, to my knowledge.

Any aftermarket headers remove the first cat... so emissions are different - so CA hates you.

 

Headers remove the ONLY cat we have so it's not legal anywhere

 

Actually you still have another cat, but it removes one of the cats. IIRC there is another cat in the S-Pipe.

Anytime you add something that isnt CARB Exempt, you will bend over and take it..... ALL headers for the tC and ALL S-Pipes for tC that Ive seen remove the cat(s)

 

I don't think that's right... the header one is a pre-cat. The real cat is just after the s/down pipe.

 

but isnt there a way to add on a cat to the header?

so if i buy a mid pipe and no header, will that effect the emissions?

 

Oh good call I forgot about the s-pipe

 

No cat in the s-pipe... just after it. I'm looking at the parts fiche for the 05 right now...

 

I thought there were two resonators in the mid pipe not cats and I also thought you want to have your sensors before and after the cat so the mid pipe should have resonators.

 

so there are 2 cats in the tC?

 

Here you go guys:

 

Well to my understanding, the first smaller bubble is a cat (the second one)... and the longer one is the resonator.

I could be wrong though... I haven't pulled apart my exhaust or anything to check.

But I think someone else that has replaced their exhaust can tell us for sure. I'm just going by what I've read and researched.

 

LOL i never heard of such thing a cat in the s-pipe, theres one in the header (primary) and seondary cat (smaller) in the midpipe

 

The bulbus section of Part # 17420 is the RESONATOR, the part immediatley before it is the Secondary CAT.

If you live in CA and want an aftermarket header you must:
Keep your Exhaust Manifold HEAT SHIELD, this will conceal any aftermarket header that you put on and give off the appearance of a stock/untampered exhaust system. Then utilize the Anti-Fouler O2 sensor bypass in order to avoid receiving a CEL from your car after the header is installed.

Now if your truly daring ZPI makes a midpipe that deletes the Secondary CAT and Resonator, they recently used it on the PIPES TV show and won their match against a Pontiac FireChicken.

PART DESCRIPTION EDITED FOR THE NITPICKY

 

Either way it still seems like it wouldn't pass emissions without a cat

 

Actually it lists 17420 as that entire midpipe assembly and doesn't seem to break it down any further

 

ahh so maybe I am right and there is only one cat

 

i had megan mid and my car smelled like crap, since i put my oem back on its fine.....so im more than likely sure theres a little cat in the OEM mid

i have full I/H/E too

 

I dont know though I have intake and full megan cat back and no smell at all. I bet if I got headers it would though.

 

*SIGH*
Listen very carefully because I don't want to repeat this.

The tC has TWO, DOS, DOIS, DEUX, NI, 2 Catalytic Converters.

The PRIMARY CAT is part of the OEM exhaust manifold, the SECONDARY CAT is part of the Mid-pipe. It CAN pass most state emissions testing with only ONE of these in working order. The ENTIRE reason that the tC and most other cars have an EXCESSIVE amount of pollution control devices is because of CRAPPYFORNIA and their "**** Air quality Laws" that, BTW do nothing because that state still has the worst air quality in the U.S.

Now commit this to memory, write it down, repeat it to yourself five times, make flash cards or whatever, but do not forget: tC=TWO CATS.

[/End rant]