Performance Mods and Emmissions Testing - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


General GM Chat When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made. Chat about all things GM (and related cars). Off-topic stuff should be in the Lounge, and all Model specific mechanical problems should be posted in the proper forum.

Reply
 
 
 
Thread Tools Search this Thread
Old 03-24-2007, 11:44 AM   #1
Senior Member
True Car Nut
Thread Starter
 
Join Date: Mar 2005
Posts: 2,688
Thanks: 0
Thanked 0 Times in 0 Posts
dillcc is on a distinguished road
Default Performance Mods and Emmissions Testing

Here in the Chicago area we have emmissions testing. I'm planning on SLP headers with the SLP cat, stage1 cam, 3.2 (maybe 3.0 if I get a P&P'd SC), and the proper Intense PCM burn to go with.

Has anyone running the SLP'*/cat passed emmissions testing?


On another note...if I ever go crazy enough to go intercooled I'd have to remove the EGR. Any ideas if that'll pass emissions?
dillcc is offline   Reply With Quote
Old 03-24-2007, 11:50 AM   #2
Senior Member
True Car Nut
 
Join Date: Jan 2006
Location: NEBF:06,07 | NYBF:06,07 | ONBF:06,07 | CNBF:06 & more............
Posts: 8,029
Thanks: 0
Thanked 0 Times in 0 Posts
bandit is on a distinguished road
Default

ok "emmissions testing"

Do they stick something up you tail pipe there? or do they just go by what the PCM tells them?

Cuz in NY they just do "emmissions testing" buy seeing what the Computer tells them
bandit is offline   Reply With Quote
Old 03-24-2007, 01:13 PM   #3
Senior Member
True Car Nut
Thread Starter
 
Join Date: Mar 2005
Posts: 2,688
Thanks: 0
Thanked 0 Times in 0 Posts
dillcc is on a distinguished road
Default

I'm almost positive it'* measured at the tailpipe, but I think they check the PCM as well for emissions codes.

That raises another question...would they be able to tell if you have an emissions DTC deleted or would it just look "healthy" to them? Because I'm pretty sure you get the rear O2 deleted with the SLP cat.
dillcc is offline   Reply With Quote
Old 03-24-2007, 02:16 PM   #4
Senior Member
Posts like a Corvette
 
Join Date: Jan 2007
Location: San Diego, CA
Posts: 1,451
Thanks: 0
Thanked 0 Times in 0 Posts
agrazela is on a distinguished road
Default

IMO, your cam is the thing most likely to make you fail a tailpipe sniff emissions test, due to increased overlap passing unburned HC'*.
agrazela is offline   Reply With Quote
Old 03-24-2007, 03:26 PM   #5
Senior Member
Posts like a Corvette
 
Join Date: Jun 2005
Location: Berkeley, IL
Posts: 1,596
Thanks: 0
Thanked 0 Times in 0 Posts
DarkShadow is on a distinguished road
Default

hehe

youre in luck, in Illinois we have emissions testing every couple years for cars.

cars 96 and newer just get an obd2 scan, no sniffer in the tailpipe, so no codes = pass.

cars 95 and older got the sniffer but as of this year all obd1 and older cars are exempt from emissions testing
DarkShadow is offline   Reply With Quote
Old 03-24-2007, 05:28 PM   #6
Senior Member
True Car Nut
Thread Starter
 
Join Date: Mar 2005
Posts: 2,688
Thanks: 0
Thanked 0 Times in 0 Posts
dillcc is on a distinguished road
Default

WOOHOO!!!
dillcc is offline   Reply With Quote
Old 03-25-2007, 11:37 AM   #7
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Bob... PDXGTP just passed emissions. Same testing company and methods for your state. If he can pass..you'll fly.
BillBoost37 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
California Emmissions - what means this? jwakamud Lounge 2 12-21-2006 09:16 PM


Thread Tools Search this Thread
Search this Thread:

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



All times are GMT -4. The time now is 04:42 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.