Go Back   Corvette Forum > C6 Corvette, 2005 - 2013 > C6 Tech/Performance
Sign in using an external account
Register Forgot Password?
Register Albums Search Today's Posts Mark Forums Read FAQ
Search
C6 Tech/Performance
LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace Sponsored by
21st Century Muscle Cars

Welcome to Corvetteforum.com!
Welcome to Corvetteforum.com.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Corvetteforum.com today!


Corvette Store
 
 
C6 Parts & Accessories
C5 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
  
Reply
 
 
 
 
Thread Tools Search this Thread
Old 03-27-2011, 02:22 PM   #1
svtrich
Junior Member
 
Member Since: Mar 2009
Default can you put headers on a california car and pass smog

i seams that the headers really help out.but can we put them on a california car and pass smog?
thanks Richard
svtrich is offline   Reply With Quote
Old 03-27-2011, 03:19 PM   #2
djbrun
CF Senior Member
 
djbrun's Avatar
 
Member Since: Sep 2008
Location: San Jose California
Default

I'll give you the official answer, no you can not.

To pass smog at any inpection station (I said any) you would have to have your stock converters in the stock location. This means they can only be removed if they were faulty and replaced with stock or carb O.E. replacement parts. (Not sure if there are any)

Headers, to be legal could only be shorty style so the factory cats are not affected, further back causes a drop in temperature which effects the operation of the cat. (They are designed with a particulat heat and emmisions level in mind.)
The shorty headers would have to be Carb O.E. certified as well. I do not belive that any one makes them for the C6. That's my official answer.
There are shops that will still smog you if you have headers and high flow cats. Get those cats really hot before testing. That's my unofficial answer.

DJ
djbrun is offline   Reply With Quote
Old 03-27-2011, 03:23 PM   #3
svtrich
Junior Member
 
Member Since: Mar 2009
Default

Quote:
Originally Posted by djbrun View Post
I'll give you the official answer, no you can not.

To pass smog at any inpection station (I said any) you would have to have your stock converters in the stock location. This means they can only be removed if they were faulty and replaced with stock or carb O.E. replacement parts. (Not sure if there are any)

Headers, to be legal could only be shorty style so the factory cats are not affected, further back causes a drop in temperature which effects the operation of the cat. (They are designed with a particulat heat and emmisions level in mind.)
The shorty headers would have to be Carb O.E. certified as well. I do not belive that any one makes them for the C6. That's my official answer.
There are shops that will still smog you if you have headers and high flow cats. Get those cats really hot before testing. That's my unofficial answer.

DJ
california is
svtrich is offline   Reply With Quote
Old 03-27-2011, 04:07 PM   #4
dbratten
CF Senior Member
Support Corvetteforum!
 
dbratten's Avatar
 
Member Since: Nov 2005
Location: Turlock CA
Send a message via AIM to dbratten
Default

From what I can find the Clean Air Act test was amended in 1992 by Gov. Pete Wilson from San Diego where by coincidence the two main owners of the LLC that owns smog stations reside. The LLC is out of Oregon to, I will guess, avoid taxes in CA.
dbratten is offline   Reply With Quote
Old 03-27-2011, 04:52 PM   #5
shado
CF Senior Member
 
shado's Avatar
 
Member Since: Nov 2010
Location: On the east coast we drive until we die
Default

Install Z06 factory manifolds. You wont pick up as much power but you will pick up some, they're relatively inexpensive, and you'll still pass because the stock cats haven't been moved.
shado is offline   Reply With Quote
Old 03-27-2011, 05:07 PM   #6
wbear
CF Senior Member
 
wbear's Avatar
 
Member Since: Jun 2007
Location: Little Egypt, USA
Default

Quote:
Originally Posted by shado View Post
Install Z06 factory manifolds. You wont pick up as much power but you will pick up some, they're relatively inexpensive, and you'll still pass because the stock cats haven't been moved.
Under the law that is still illegal. Those manifolds/cats were only EPA certified on LS7's. If you install them on LS2's or 3's they are no longer stock and would be as illegal as headers in the eyes of the law.

You could still "pass" if the technician didn't know the difference but I know everyone on the forum strives to follow the letter of the law and would never pull such a switcheroo.
wbear is offline   Reply With Quote
Old 03-27-2011, 08:47 PM   #7
Boomer111
CF Senior Member
 
Boomer111's Avatar
 
Member Since: Oct 2005
Location: Bay Area Ca.
Default

Never...
Boomer111 is offline   Reply With Quote
Old 03-27-2011, 09:00 PM   #8
gunterwalker
CF Senior Member
 
gunterwalker's Avatar
 
Member Since: Oct 2010
Location: Cape May, NJ; Guntersville, AL; Orange Beach, AL
Default

from what I understand you can pass smog but not the visual test. I'm sure others with more knowledge will chime in. I would have to if I lived in CA.
gunterwalker is offline   Reply With Quote
Old 03-27-2011, 09:56 PM   #9
TRBOKEV
CF Senior Member
 
TRBOKEV's Avatar
 
Member Since: Feb 2011
Location: Phillips Ranch California
Default

Im in CA and gone Z06 exhaust manifold, ZR1 (X pipe) and z06 mufflers.
This shouldnt be any problem for smog.
TRBOKEV is offline   Reply With Quote
Old 04-01-2012, 04:43 PM   #10
Dexter McCay
Junior Member
 
Member Since: Apr 2012
Default

Just wrap them with heat wrap and try to put cats in near same location... I passed...
Dexter McCay is offline   Reply With Quote
Old 04-01-2012, 05:28 PM   #11
TPSMak
Supporting Vendor
St. Jude Donor '11
 
TPSMak's Avatar
 
Member Since: Nov 2007
Location: San Jose CA
Default

If you have a good tune and a small cam you can pass the sniffer BUT if the shop cares about the visual you will NOT pass smog. In CA Long Tube headers are not CARB approved
__________________

TPSMotorsports.com
Mike Mak
521 Charcot Ave Suite #199
San Jose, CA 95131
Phone #: 408/898-4632
Email #: MikeM@TPSMotorsports.com
Authorized dealer of Corbeau Racing Seats, Edelbrock Super Chargers, A&A Superchargers, LG Motorsports, Pfadt Racing, Billy Boat Exhaust, GHL Exhaust, TPS 427 Shifter, TPS Brake Rotors/ Kits, Stainless Steel Brake Lines & much more...
TPSMak is offline   Reply With Quote
Old 04-01-2012, 07:27 PM   #12
MSTROBES
CF Senior Member
 
MSTROBES's Avatar
 
Member Since: May 2007
Location: Garden Grove Ca
Default

Quote:
Originally Posted by TPSMak View Post
If you have a good tune and a small cam you can pass the sniffer BUT if the shop cares about the visual you will NOT pass smog. In CA Long Tube headers are not CARB approved
dido. put them on when you get the smog required change them back for the test. that is what i will do. believe me the headers w/ npp it's worth it.
and enjoy.
MSTROBES is offline   Reply With Quote
Old 04-01-2012, 07:50 PM   #13
csun213
CF Senior Member
 
csun213's Avatar
 
Member Since: Sep 2004
Location: Union City CA
Default

I just passed my smog test on my 2006 A6 and the answer is no. I passed the sniff test however you will have a hard time finding a smog shop that will pass your car with headers. It is getting harder and harder. This is the reason why I removed my LG headers and will be selling it soon.

It is a real pain to remove the headers, install the stock exhaust and then remove the stock exhaust then reinstall the headers after passing smog test. Remember, you have to do this every 2 years. Plus now the police can pull you over and do a visual check any time they want. Isn't CA great.

In my opinion, it is just too much trouble plus the smog laws are just going to get harder each year.
csun213 is offline   Reply With Quote
Old 04-01-2012, 07:54 PM   #14
VETFEVER
CF Senior Member
Support Corvetteforum!

 
VETFEVER's Avatar
 
Member Since: May 2007
Location: Feverish All Over
Default

Quote:
Originally Posted by shado View Post
Install Z06 factory manifolds. You wont pick up as much power but you will pick up some, they're relatively inexpensive, and you'll still pass because the stock cats haven't been moved.
I have a complete 3" Z06 exhaust on my car and it is fantastic - plenty loud - bi-mode operation I can control from the buttons on my visor.
VETFEVER is offline   Reply With Quote
Old 04-01-2012, 08:57 PM   #15
VET4LES
CF Senior Member
 
VET4LES's Avatar
 
Member Since: Oct 2004
Location: San Clemente CA
Default

FYI. Relocating the cat's is a federal EPA law not just California. This makes long tube headers illegal in all 50 states.

I have lived in CA for many years. Before the smog laws started the smog was so bad it was miserable. The smog in the LA area was a cloud hanging over the entire county. Breathing was difficult. Many cities in California were like that. School kids couldn't compete in their gym classes on smog alert days. We never have days like now.
VET4LES is offline   Reply With Quote
Old 04-01-2012, 11:22 PM   #16
Boomer111
CF Senior Member
 
Boomer111's Avatar
 
Member Since: Oct 2005
Location: Bay Area Ca.
Default

Quote:
Originally Posted by VET4LES View Post
FYI. Relocating the cat's is a federal EPA law not just California. This makes long tube headers illegal in all 50 states.

I have lived in CA for many years. Before the smog laws started the smog was so bad it was miserable. The smog in the LA area was a cloud hanging over the entire county. Breathing was difficult. Many cities in California were like that. School kids couldn't compete in their gym classes on smog alert days. We never have days like now.
Your correct on all counts.

I believe something in the neighborhood of 75% of smog comes from other sources than autos.

I say if the car passes tail pipe let yer go.
Boomer111 is offline   Reply With Quote
Old 04-02-2012, 06:39 AM   #17
VET4LES
CF Senior Member
 
VET4LES's Avatar
 
Member Since: Oct 2004
Location: San Clemente CA
Default

Quote:
Originally Posted by Boomer111 View Post
Your correct on all counts.

I believe something in the neighborhood of 75% of smog comes from other sources than autos.

I say if the car passes tail pipe let yer go.



VET4LES is offline   Reply With Quote
Old 04-02-2012, 06:39 AM
 
Go Back   Corvette Forum > C6 Corvette, 2005 - 2013 > C6 Tech/Performance
Reload this Page can you put headers on a california car and pass smog
 
 
 
Reply

Tags
bottle, c6, ca, california, car, carb, certified, corvette, headers, installed, nitrous, nv, pass, smog, test


Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -4. The time now is 12:48 AM.


Emails & Password Backup

Search Engine Friendly URLs by vBSEO 3.5.2