Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
Classic Industries
Go Back   Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com > Engine | Drivetrain | Powertrain Technical Discussions > Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons

Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

Reply
 
Thread Tools
Old 05-22-2013, 12:46 PM   #1
bsimms89
 
Drives: IOM SS/RS Convertible
Join Date: Apr 2012
Location: Setauket, NY
Posts: 21
Emissions question

I have only worked on cars that were old enough that they no longer had to pass emissions regulations in New York (25 years old or more). Before I started working on my camaro I was curious of what exactly they test for during an emissions inspection and if since I am planning on going with a larger cam if when this cam is installed even with a proper tune will I fail an emissions test? If this is the case does that mean that everyone who has modded their cars have a shop that fudges the numbers on their inspection?

I am still in the planning stages but I am planning on going with a comp cam 231/247 617/627 with a 3200 stall, 3.91 gears from LPE, and american racing headers as a street setup. I am just curious of how people predict this will be in retaining reasonable driveability and how it will effect my inspection in New York?
bsimms89 is offline   Reply With Quote
Old 05-23-2013, 04:24 PM   #2
scites
 
Drives: 2010 camaro SS/RS
Join Date: Dec 2012
Location: swaffham UK
Posts: 310
I was wonting to know the same thing..im just wanting to go with a TSP VVT1 220deg and dont think that will pass emissions.
scites is offline   Reply With Quote
Old 05-23-2013, 04:38 PM   #3
axis
Search Ninja
 
axis's Avatar
 
Drives: 2010 Black 2SS/RS A6
Join Date: Oct 2009
Location: Central Ark
Posts: 7,197
It all depends on what your state tests for. With a little searching or calling around, you can find out what your particular state requires. Personally, I wouldn't trust anyones answer from any board, concerning emissions. If you're that worried about it, you need to hear it from the source.

That being said, it's all in the tune. A good tune will pass all emissions except for visual (if you're running high flow cats), and possibly sniffer. It is illegal to physically move or remove a set of working cats, which is why they fail the visual test. I don't know for certain that high flow cats will fail a sniffer but common sense tells me they should.
__________________
2010 Black 2SS/RS A6
Halltech CF 102 fed
GPI modded intake manifold
Bo (knows) White ported TB
Kooks LT's/ Dynomax VT
Pfadted (springs/sways)
Dyno tuned by Rhino and GPI

I once parallel parked a train.
axis is offline   Reply With Quote
Old 05-23-2013, 04:39 PM   #4
Kelly@PCMofNC

 
Drives: 2010 RS/SS
Join Date: Dec 2010
Location: Mooresville, NC
Posts: 856
Do you have a sniffer test in NYS?
__________________

See what's in our shop on Facebook! Customer Build Blogs!
www.pcmofnc.com
Performance Parts & Installs - Dyno Tuning - Mail Order Tuning
704-307-4227
Kelly@PCMofNC is offline   Reply With Quote
Old 05-23-2013, 04:42 PM   #5
DuskSS
Bayou City Muscle Cars
 
DuskSS's Avatar
 
Drives: 2013 2SS Dusk Edition
Join Date: Jan 2013
Location: Houston Texas
Posts: 1,472
Quote:
Originally Posted by axis View Post
It all depends on what your state tests for. With a little searching or calling around, you can find out what your particular state requires. Personally, I wouldn't trust anyones answer from any board, concerning emissions. If you're that worried about it, you need to hear it from the source.

That being said, it's all in the tune. A good tune will pass all emissions except for visual (if you're running high flow cats), and possibly sniffer. It is illegal to physically move or remove a set of working cats, which is why they fail the visual test. I don't know for certain that high flow cats will fail a sniffer but common sense tells me they should.
Why would a hi flow catalytic converter not pass emissions?
that's it's entire job and if it didn't work why would anyone buy them?
That would be like buying a Tablet with no CPU..

We ran high flow cats for years even on the sniffer down here and the all passed easily.

I would assume today's hi-flows are even better than those.

and at least down here the law will not fail you visually for replacing cats as long as they are there you are fine.

as you said most states are completely different.
__________________
2013 2SS Dusk Edition
Dual Mode Exhaust CAI Inc CAI
Lethal Racing Stage IV
510.7rwhp 477fpt
Oracle Lighting throughout
DuskSS is offline   Reply With Quote
Old 05-23-2013, 09:56 PM   #6
scites
 
Drives: 2010 camaro SS/RS
Join Date: Dec 2012
Location: swaffham UK
Posts: 310
Im being stationed in England and have to pass the test over there. guess i need to see if it passes in september with boltons and HFC's then if they say its fine ill try the cam..
scites is offline   Reply With Quote
Old 05-23-2013, 10:01 PM   #7
mikeyg36
The GT Troll Hundred
 
mikeyg36's Avatar
 
Drives: Cammed '12 2SS/RS LS3 '15 Z/28
Join Date: Jul 2012
Location: Ellicott City, MD
Posts: 8,253
Quote:
Originally Posted by axis View Post
It all depends on what your state tests for. With a little searching or calling around, you can find out what your particular state requires. Personally, I wouldn't trust anyones answer from any board, concerning emissions. If you're that worried about it, you need to hear it from the source.

That being said, it's all in the tune. A good tune will pass all emissions except for visual (if you're running high flow cats), and possibly sniffer. It is illegal to physically move or remove a set of working cats, which is why they fail the visual test. I don't know for certain that high flow cats will fail a sniffer but common sense tells me they should.
While it is illegal to remove working cats, why can't you just say that they failed and you replaced them? They can't say no...
__________________
Click For Build Thread ***CAI Intake, ARH LTs, FSP Big NA Cam, Tuned By Matt@FSP***
mikeyg36 is offline   Reply With Quote
Old 05-23-2013, 11:39 PM   #8
axis
Search Ninja
 
axis's Avatar
 
Drives: 2010 Black 2SS/RS A6
Join Date: Oct 2009
Location: Central Ark
Posts: 7,197
Quote:
Originally Posted by DuskSS View Post
Why would a hi flow catalytic converter not pass emissions?
that's it's entire job and if it didn't work why would anyone buy them?
That would be like buying a Tablet with no CPU..

We ran high flow cats for years even on the sniffer down here and the all passed easily.

I would assume today's hi-flows are even better than those.

and at least down here the law will not fail you visually for replacing cats as long as they are there you are fine.

as you said most states are completely different.
Highflow cats are quite a bit less effective than OEM ones. How can a cat with half the cell count work just as well as the OEM ones? Like I said in my statement, I don't know for sure but it seems as though they would fail a sniffer test. I know I can still sometimes smell raw fuel with mine, even after they heat up.

Some states are quite finicky when it comes to their emissions testing. CA is the worst but i'm sure there are a few others that are bad as well. Cats don't typically fail on a 2-3yr old car.

Quote:
Originally Posted by mikeyg36 View Post
While it is illegal to remove working cats, why can't you just say that they failed and you replaced them? They can't say no...
As I said above, how many OEM cats have failed within 2-3yrs on a stock or nearly stock car? I don't know if they make you prove it or not, just telling you what the law says. I live in Arkansas and we don't have emissions testing at all.
__________________
2010 Black 2SS/RS A6
Halltech CF 102 fed
GPI modded intake manifold
Bo (knows) White ported TB
Kooks LT's/ Dynomax VT
Pfadted (springs/sways)
Dyno tuned by Rhino and GPI

I once parallel parked a train.
axis is offline   Reply With Quote
Old 05-25-2013, 09:01 AM   #9
04GOAT-11SS
 
Drives: 2011 2SS/RS 2004 GTO
Join Date: Sep 2012
Location: Long Island NY
Posts: 36
New York has no sniffer test. They do a obdII test for 96 to 2 model years old (2011), a visual for 25 years old (1988) to 95 and just a safety for cars older than 25 or less than 2.

Most places will just hook up the state computer to the obd port while doing the emissions portion of the test and not even look around or open the hood. So, as long as you have no codes stored and your monitors have run you'll be OK.
__________________
2011 2SS/RS - Kooks Headers, HFCs, Corsa exhaust, Magnacharged, Cold Air Inductions CAI, tuned by JRE
04GOAT-11SS is offline   Reply With Quote
 
Reply

Thread Tools

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

Forum Jump


All times are GMT -5. The time now is 10:25 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.