DIY Turbo Discussion greddy on a 1.8? homebrew kit?
Sponsored by:
Sponsored by:

Tips for passing emissions...

 
Old 07-28-2008, 10:12 PM
  #1  
Junior Member
Thread Starter
 
Join Date: Dec 2006
Posts: 209
Total Cats: 0
Default Tips for passing emissions...

Ok, so I failed the emissions test about a week ago. I got a new "cat" put in and went to get it inspected again and it still failed. I just leaned out the tune a lot and am going to take the car tomorrow to reinspect it.

I have all the proper emissions passing parts, Cat, EGR pipe, etc. but I was wondering if yall know any tips for helping pass emissions?

1995 miata... The set-up is a Hyrda EMS, Garret GT2860 turbo... and I don't know what else I would post that would be relevant for this?
ak47bravo is offline  
Old 07-28-2008, 10:36 PM
  #2  
Junior Member
 
Join Date: May 2007
Location: San Diego
Posts: 380
Total Cats: 0
Default

probably will help if you told us on what you failed on.
jobambo is offline  
Old 07-28-2008, 10:37 PM
  #3  
Elite Member
iTrader: (9)
 
Saml01's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 5,710
Total Cats: 2
Default

I remember Scott saying you cant be too lean because it will raise NOx levels. If I was in your shoes, id slip the guy a 50 on top of whatever the inspection costs and have him run his own car.
Saml01 is offline  
Old 07-28-2008, 10:38 PM
  #4  
I'm Miserable!
iTrader: (5)
 
bryantaylor's Avatar
 
Join Date: Dec 2006
Location: jacksonville, fl
Posts: 1,711
Total Cats: 0
Default

step 1: move

step 2:

step 3: profit
bryantaylor is offline  
Old 07-28-2008, 10:38 PM
  #5  
Elite Member
iTrader: (21)
 
paul's Avatar
 
Join Date: Jun 2006
Location: Point Pleasant, NJ
Posts: 2,956
Total Cats: 2
Default

don't go too advanced on timing, you'll fail for NOx
paul is offline  
Old 07-28-2008, 11:07 PM
  #6  
Elite Member
iTrader: (5)
 
Join Date: Mar 2007
Location: NYC
Posts: 1,970
Total Cats: 1
Default

http://www.megamanual.com/ms2/tune.htm#emissions

retard ignition and have the parts of the map where they'll be testing the car set to 14.7 AFR
It's a balancing act.
johndoe is offline  
Old 07-28-2008, 11:23 PM
  #7  
Junior Member
iTrader: (2)
 
Join Date: Oct 2007
Location: Lisle, IL
Posts: 294
Total Cats: 0
Default

Originally Posted by johndoe View Post
http://www.megamanual.com/ms2/tune.htm#emissions

retard ignition and have the parts of the map where they'll be testing the car set to 14.7 AFR
It's a balancing act.
Last time I flunked in IL (just barely) I missed all three test criteria by a bit. I only had a a month reprieve to get the car "clean" before they would pull my plate so I didn't want to take any chances. I disconnected my BEGI RRFPR (they used to do a chassis dyno test in IL), put in new plugs (stock heat range, but tight gap at .030), seafoamed the TB, put in a new O2 sensor (original was 16yrs old) set the timing to exactly 10 degrees BTDC and passed with flying colors. Drove immediately home and re-connected the RRFPR too!

Mitch
sn95 is offline  
Old 07-29-2008, 12:13 AM
  #8  
Junior Member
Thread Starter
 
Join Date: Dec 2006
Posts: 209
Total Cats: 0
Default

Originally Posted by Saml01 View Post
I remember Scott saying you cant be too lean because it will raise NOx levels. If I was in your shoes, id slip the guy a 50 on top of whatever the inspection costs and have him run his own car.
Dude... you don't even know how many places I tried to do that at. I even offered a 120... no one would do it. I failed the low speed and high speed test.
ak47bravo is offline  
Old 07-29-2008, 12:22 AM
  #9  
Junior Member
iTrader: (1)
 
Join Date: Jun 2007
Location: Plano
Posts: 83
Total Cats: 0
Default

Post your emissions pass/fail details.
tilt is offline  
Old 07-29-2008, 11:28 AM
  #10  
Junior Member
Thread Starter
 
Join Date: Dec 2006
Posts: 209
Total Cats: 0
Default

Thanks for the help guys.... I just got back from the inspection. It passed!! Thank god...
ak47bravo is offline  
Old 07-29-2008, 12:30 PM
  #11  
Elite Member
iTrader: (5)
 
Join Date: Mar 2007
Location: NYC
Posts: 1,970
Total Cats: 1
Default

so what changes did you make?
johndoe is offline  
Old 07-29-2008, 12:30 PM
  #12  
Junior Member
iTrader: (1)
 
Join Date: Jul 2007
Posts: 123
Total Cats: 0
Default

So What did you do to help? And couyld you tells us what you failed on the first time.

Last edited by 1redcanuck; 07-29-2008 at 01:01 PM.
1redcanuck is offline  
Old 07-29-2008, 02:47 PM
  #13  
Elite Member
iTrader: (9)
 
Saml01's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 5,710
Total Cats: 2
Default

Originally Posted by ak47bravo View Post
Dude... you don't even know how many places I tried to do that at. I even offered a 120... no one would do it. I failed the low speed and high speed test.
Thats really gay, but whenever I had to do it it never failed. Usually you have to be really serious, and mature. If they suspect you to be a guy whos gonna go and tell a whole buncha people they wont do it for you because thats gonna put em all in prison tomorrow.

But you passed anyway so all is well.
Saml01 is offline  
Old 07-29-2008, 02:52 PM
  #14  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 76,621
Total Cats: 2,317
Default

Kurt can help you:

http://forum.miata.net/vb/showthread.php?t=293125


needs more "emissions test fuel conditioner"
Braineack is offline  
Old 07-29-2008, 02:54 PM
  #15  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 76,621
Total Cats: 2,317
Default

Originally Posted by ak47bravo View Post
Thanks for the help guys.... I just got back from the inspection. It passed!! Thank god...

It's so ******* fantastic of you not to share why you failed and what you did to solve your dilemma. Thanks for posting at Mazda-speed.com
Braineack is offline  
Old 07-29-2008, 11:52 PM
  #16  
Elite Member
iTrader: (5)
 
Join Date: Mar 2007
Location: NYC
Posts: 1,970
Total Cats: 1
Default

Hey assfarmer, how but helping out the rest of us????????
johndoe is offline  
Old 07-30-2008, 06:22 PM
  #17  
Junior Member
Thread Starter
 
Join Date: Dec 2006
Posts: 209
Total Cats: 0
Default

Originally Posted by Braineack View Post
It's so ******* fantastic of you not to share why you failed and what you did to solve your dilemma. Thanks for posting at Mazda-speed.com
Lol... sorry guys. I have been swamped at work and haven't really had time to get on the forums.

I'm looking at the inspection report sheet and I'll post what I failed.

I can't tell exactly what it is... the print on the sheet was cut off on the far left, down the whole page.

On the high speed run on the part I failed, the standard PPM was "1123" and I measured "2884". I failed the exact same one on the low speed as well. The standard for the low speed was "1242" and I measured "2582".

I passed everything else... the only thing that was changed was, the AFR was leaned out. It was running really rich before.

Sorry for the delayed response and lack of information on the failed inspection.
ak47bravo is offline  
Old 07-30-2008, 07:23 PM
  #18  
Junior Member
 
Join Date: Oct 2006
Location: Vancouver, Canada
Posts: 199
Total Cats: 0
Default

There is a thread last Aug/Sept covering how to pass emmisions test.

Both on a MS and a Link.

https://www.miataturbo.net/forum/showthread.php?t=12408
gwilo is offline  
Old 07-30-2008, 07:28 PM
  #19  
Junior Member
 
Join Date: Oct 2006
Location: Vancouver, Canada
Posts: 199
Total Cats: 0
Default

gwilo is offline  
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Jike Spingleton
Cars for sale/trade
3
09-20-2016 04:33 PM
EErockMiata
MEGAsquirt
6
09-24-2015 09:49 AM
greddygalant
Miata parts for sale/trade
0
09-18-2015 08:00 PM
ennjay
General Miata Chat
2
09-17-2015 07:04 AM


Thread Tools
Search this Thread
Quick Reply: Tips for passing emissions...


Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

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.