Pass smog running lean?
+ Reply to Thread
Results 1 to 3 of 3

This is a discussion on Pass smog running lean? within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; this is mearly an idea, being that am only a novice in car knowledge. Everyone is so worried about passing ...

  1. #1
    Registered User
    Join Date
    Oct 2002

    Pass smog running lean?

    this is mearly an idea, being that am only a novice in car knowledge.
    Everyone is so worried about passing smog without cats, well, i had an idea.
    What if you had some kind Air Fuel Controller like the Apexi, ETC. When smog check time came around, could you program your car to run extra extra lean in order to pass?? I dont know the possible engine or performance consequences of doing this;

    like I said im not a car buff. What do you guys think??

    This should be interesting....
    Last edited by LagunaRex; 10-29-2002 at 11:55 AM.

  2. Remove Advertisements

  3. #2
    Moderator GV27's Avatar
    Join Date
    Jun 2002
    Green Mountain, Colorado
    I Support ClubWRX
    You'll never pass a sniffer test with no cats. A single high-flow cat should do it anyway as long as it's nice and hot.
    "Inasmuch as ye have done it to one of the least of these my brethren, ye have done it to me." -Jesus

    1990 Alfa Romeo Spider Veloce
    1992 Toyota 4Runner SR5 3.Slow
    1993 Honda CBR600F2
    2002 WRX SportWagon *sold*

  4. #3
    Registered User
    Join Date
    Nov 2002
    No, If you run too lean, the CO level will go up. Too rich, HC goes up.

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself. We strongly suggest that you stay away from using aol, yahoo, msn, and hotmail accounts. Sometimes the mail server blocks the emails from our server. As a result you will not receive any notifications including the confirmation email.

Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts