348 Smog Test Results (with and without cats) | FerrariChat
Buy

348 Smog Test Results (with and without cats)

Discussion in '348/355' started by ghardt, Oct 8, 2009.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. ghardt

    ghardt Formula 3

    Apr 18, 2004
    1,260
    Texas
    Full Name:
    Jerry
    #1 ghardt, Oct 8, 2009
    Last edited by a moderator: Sep 7, 2017
    Well here are my Smog test results for both without cats and with cats. You'll notice the test from 07/02/2004 was without cats and it failed. And you'll see the test dated today 10/08/2009 was with cats and it passed. I've been running her for the last 5 years without cats; while the sound, lower heat, and a bit more power have been nice, I've decided to leave the cats on. The extra head ache of looking for "special shops" to get inspected has not been fun. So here are the results: The mechanic that ran the test was surprised as to how low the emissions output was.
    Image Unavailable, Please Login
    Image Unavailable, Please Login
     
  2. junglistluder

    junglistluder F1 Rookie
    Owner Silver Subscribed

    Mar 23, 2007
    3,631
    VA
    Full Name:
    Brendan
    #2 junglistluder, Oct 8, 2009
    cool comparison. thanks for posting.
     
  3. SonomaRik

    SonomaRik F1 Veteran

    Dec 15, 2006
    6,904
    Folsom, CA (formerly Sonoma)
    #3 SonomaRik, Oct 8, 2009
    good post, thanks for posting.
     
  4. AceMaster

    AceMaster Three Time F1 World Champ

    Feb 6, 2009
    34,789
    Ontario, Canada
    Full Name:
    Mike
    #4 AceMaster, Oct 8, 2009
    +1
     
  5. rbellezza

    rbellezza F1 Rookie

    Jun 18, 2008
    2,793
    Henderson, NV
    Full Name:
    Roberto Bellezza
    #5 rbellezza, Oct 8, 2009
    +2
     
  6. vvassallo

    vvassallo F1 Veteran

    Aug 4, 2006
    8,329
    Palos Verdes
    Full Name:
    Vince V
    #6 vvassallo, Oct 11, 2009
    Last edited: Oct 11, 2009
    Your 2009 test (low rpm) would have failed in CA. Your HC is over 50 which is the limit. My car after all the famous gothspeed mods and ND chip is right at 50. It is interesting to see how far out of compliance our cars would be without those cats. Anyone running no cats in CA is warned. We aren't even close to compliance without cats.

    We are still pursuing the limits of legal modifications to our engines. My hope is that we can maximize performance and still keep it legal, but it is a fine line. I quip that we are doing what the factory should have done to explore the limits of their engine, when they seemed to be distracted by the replacement, Luca's 355 baby.
     
  7. ghardt

    ghardt Formula 3

    Apr 18, 2004
    1,260
    Texas
    Full Name:
    Jerry
    #7 ghardt, Oct 11, 2009
    The 2009 test is with 16 year old cats with 12,000 miles. I hope new high flow cats would perform a little better in terms of emissions.
     
  8. 3forty8

    3forty8 F1 Rookie
    Owner

    Apr 25, 2006
    2,713
    San Diego
    Full Name:
    Eric
    #8 3forty8, Apr 4, 2010
    This is interesting; I just had my car smogged yesterday and the 15MPH limit is 112 (measured 25) and the 25MPH limit is 86 (measured 24). This is HC(PPM), and I'm in a Smogcheck II zone which has the strictest limits. Are the limits different for each Smogcheck II zone in California, or have they raised the allowable limit?
     
  9. eulk328

    eulk328 F1 Rookie

    Feb 18, 2005
    2,800
    Full Name:
    F683
    #9 eulk328, Apr 4, 2010
    By "special shops" I assume you mean a place where they "don't notice" the missing cats. Why not get them put back on when you have to get the smog check? It can't be that much work. Just the associated heat and extra fire hazard gives me cause for concern when using the cats. Of course there are still legal issues and environmental issues with not having them installed all the time but that's another kettle of fish.
     
  10. MufflerMan

    MufflerMan Formula 3

    Jun 12, 2005
    1,564
    Sacramento Ca
    Full Name:
    Colby Sandman
    #10 MufflerMan, Apr 4, 2010
    I would be very surprised if anyone had any luck passing the test in Ca with no cats, visual inspection aside. Our cars do not do well without cats on the dyno, not enough heat is created to burn off the needed HC's.
     
  11. vvassallo

    vvassallo F1 Veteran

    Aug 4, 2006
    8,329
    Palos Verdes
    Full Name:
    Vince V
    #11 vvassallo, Apr 5, 2010
    I have to check my paperwork again and get back to you.
     

Share This Page