2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
Sponsored by:

CA smogging exhaust

Thread Tools
 
Search this Thread
 
Old 09-08-12, 01:00 PM
  #1  
Speed Racer
Thread Starter
 
jlee916's Avatar
 
Join Date: Dec 2011
Location: Sacramento, CA
Posts: 214
Likes: 0
Received 0 Likes on 0 Posts
CA CA smogging exhaust

I have a custom exhaust welded to the stock cat with racing beat headers. There's an exhaust leak and I have a replacement gasket that I can drop in, but I was wondering if I can even smog it with the custom exhaust?

I ask because if I can't smog it with the custom exhaust, I still have an opportunity to pick up the stock exhaust with a high flow cat (the seller said he used it to pass smog and then went straight pipe). It should smog fine with the racing beat headers, correct?

I just don't want to replace the gasket and find out that I can't even smog it since it's custom. And since I'm going to be down there, I might as well swap to stock to smog, if that's the case.

Thanks
Old 09-08-12, 01:17 PM
  #2  
Sharp Claws

iTrader: (30)
 
RotaryEvolution's Avatar
 
Join Date: Oct 2003
Location: Central Florida
Posts: 5,107
Likes: 0
Received 41 Likes on 40 Posts
doesn't matter if it is custom or not, some techs will be **** about aftermarket cats since not all are legal for use in california. if you have an exhaust with an OEM main cat, use that.
Old 09-08-12, 01:54 PM
  #3  
Moderator

iTrader: (3)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,802
Received 2,577 Likes on 1,831 Posts
in CA that exhaust will fail the visual. however if the visual isn't a problem, i have had cars pass smog with headers before, i didn't do back to back, but if anything i think the headers helped
Old 09-08-12, 02:50 PM
  #4  
Sharp Claws

iTrader: (30)
 
RotaryEvolution's Avatar
 
Join Date: Oct 2003
Location: Central Florida
Posts: 5,107
Likes: 0
Received 41 Likes on 40 Posts
wrap em up and make a bracket to bolt the stock heat shields to!
Old 09-08-12, 06:13 PM
  #5  
Moderator

iTrader: (3)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,802
Received 2,577 Likes on 1,831 Posts
Originally Posted by RotaryEvolution
wrap em up and make a bracket to bolt the stock heat shields to!
lol, that might work. mine were 20 year old RB parts, so they were all rusty and blended in...
Old 09-08-12, 06:54 PM
  #6  
Sharp Claws

iTrader: (30)
 
RotaryEvolution's Avatar
 
Join Date: Oct 2003
Location: Central Florida
Posts: 5,107
Likes: 0
Received 41 Likes on 40 Posts
some smog techs will let it fly, others will know there is a precat missing.
Old 09-09-12, 11:09 AM
  #7  
Moderator

iTrader: (3)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,802
Received 2,577 Likes on 1,831 Posts
Originally Posted by RotaryEvolution
some smog techs will let it fly, others will know there is a precat missing.
yep. my guy doesn't care about rotary stuff at all, i've brought him some pretty crazy stuff over the years, but bring him a VW and he gets the magnifying glass out!

my brother put a 92 VW engine into his 85 golf, and it looks the same to me, but the smog guy wont touch it!
Old 09-10-12, 12:23 PM
  #8  
10th Mazda - 10th A.E.
iTrader: (2)
 
Wms10th's Avatar
 
Join Date: Aug 2011
Location: Los Angeles
Posts: 215
Received 0 Likes on 0 Posts
Mine passes everytime, but I do go to the same place. They use the mirror to check for cats and do a visual. I can tell that he doesn't know what he is looking at. Same goes for my '81 that also had an aftermarket cat.
Old 09-10-12, 03:03 PM
  #9  
Moderator

iTrader: (3)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,802
Received 2,577 Likes on 1,831 Posts
i always go to the same guy, i bring him like 6-8 cars a year
Old 09-10-12, 07:51 PM
  #10  
Speed Racer
Thread Starter
 
jlee916's Avatar
 
Join Date: Dec 2011
Location: Sacramento, CA
Posts: 214
Likes: 0
Received 0 Likes on 0 Posts
it turns out that i'll be swapping in the stock exhaust and stock cat. i was wondering if i can smog it with the racing beat header or should i swap it back to stock mani? my smog guy won't do visual so that's a plus.
Old 09-11-12, 08:32 AM
  #11  
Moderator

iTrader: (3)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,802
Received 2,577 Likes on 1,831 Posts
Originally Posted by jlee916
it turns out that i'll be swapping in the stock exhaust and stock cat. i was wondering if i can smog it with the racing beat header or should i swap it back to stock mani? my smog guy won't do visual so that's a plus.
in my experience the header doesn't affect emissions.
Old 09-11-12, 11:06 AM
  #12  
Retired Moderator, RIP

iTrader: (142)
 
misterstyx69's Avatar
 
Join Date: Sep 2005
Location: Smiths Falls.(near Ottawa!.Mapquest IT!)
Posts: 25,581
Likes: 0
Received 131 Likes on 114 Posts
If they hear a leak they may not do it though.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Ian_D
New Member RX-7 Technical
6
09-06-15 10:38 PM
doritoloco
New Member RX-7 Technical
7
09-05-15 12:41 PM
FührerTüner
General Rotary Tech Support
3
09-04-15 01:41 PM



Quick Reply: CA smogging exhaust



All times are GMT -5. The time now is 08:35 AM.