Results 1 to 8 of 8

What's running lean? or rich? which is good?

This is a discussion on What's running lean? or rich? which is good? within the GTO forums, part of the Vehicle Specific category; What's running lean? or rich? which is good? Tell me what I need to know, and how to prevent it.......

  1. #1
    Junior Member TysGTO's Avatar
    Join Date
    Sep 2006
    Location
    Glen Burnie, Maryland
    Age
    39
    Posts
    95

    Brazen Orange
    2006 GTO

    What's running lean? or rich? which is good?

    What's running lean? or rich? which is good? Tell me what I need to know, and how to prevent it....

  2. #2
    Awaiting Activation
    Join Date
    Mar 2006
    Location
    LS1 land
    Age
    29
    Posts
    1,667
    it has to do with your Air/ Fuel ratio.
    Lean= too low
    Rich= too high
    or it could be the opposite

    Neither one is good. You MAF and tune control this mainly.
    Last edited by 99blueZ; 01-24-2007 at 10:14 PM.

  3. #3
    Junior Member TysGTO's Avatar
    Join Date
    Sep 2006
    Location
    Glen Burnie, Maryland
    Age
    39
    Posts
    95

    Brazen Orange
    2006 GTO

    Well, I getting a AEM Brute force CAI, I have the spintechs superpro's, I have my stock cats, and that's it. Think I'll be fine?

  4. #4
    Junior Member TysGTO's Avatar
    Join Date
    Sep 2006
    Location
    Glen Burnie, Maryland
    Age
    39
    Posts
    95

    Brazen Orange
    2006 GTO

    Should I get a hand held tuner?

  5. #5
    Member Corey1987's Avatar
    Join Date
    Oct 2006
    Location
    Greenville, NC
    Age
    30
    Posts
    231

    Black
    1998 Z/28

    rich is when ur air fuel ratios are too low, u are putting more fuel in the combustion chamber, lean is when ur AFRs are too high, not enough fuel/too much air is being put in ur combustion chamber, Id much rather be rich than lean bc when u start running too lean, stuff starts melting bc the combustion gets too hot.

  6. #6
    Awaiting Activation
    Join Date
    Mar 2006
    Location
    LS1 land
    Age
    29
    Posts
    1,667
    Quote Originally Posted by TysGTO View Post
    Well, I getting a AEM Brute force CAI, I have the spintechs superpro's, I have my stock cats, and that's it. Think I'll be fine?
    yea you will definately be fine. Those mods should only have a minimal affect on rich/lean. You can have full bolt-ons with out a tune and be fine.

    Skip getting a handheld - they are pretty limited in what they can do. A dyno tune (while costly) is the best way to go. Though you should wait until you have more mods to get that.

  7. #7
    Junior Member TysGTO's Avatar
    Join Date
    Sep 2006
    Location
    Glen Burnie, Maryland
    Age
    39
    Posts
    95

    Brazen Orange
    2006 GTO

    Quote Originally Posted by 99blueZ View Post
    yea you will definately be fine. Those mods should only have a minimal affect on rich/lean. You can have full bolt-ons with out a tune and be fine.

    Skip getting a handheld - they are pretty limited in what they can do. A dyno tune (while costly) is the best way to go. Though you should wait until you have more mods to get that.
    Thanks for all the info 99.

  8. #8
    Nitrous Tuner LS2Tuner's Avatar
    Join Date
    Aug 2006
    Location
    WestCoast AZ-CALI
    Posts
    4,763

    Silver
    05 Goat SMASHED

    Your stock PCM is tuned to try to keep the A/R at 14.7 which is best for emissions NOT horsepower!!! The most horsepower is usually reached around 12.7-12.9 which is a more rich ratio than the stock emissions tune. The Predator hand held can be bought for around $300....... And depending on your local shop that has LS1 Edit or HP Tuners to do a tune on your stock PCM it could cost you a great deal more than that $300......
    If your car is a A4 automatic car I can tell you your see a VAST difference!!! The TQ. management limit power BIG time.
    PM me if your interested in a Diablo.
    Eighther way there is quit a bit of horsepower to be found by getting your tune for HP and not the government!!!
    Don't be afraid of the bottle!!! Be afraid of your tune!!!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. running lean
    By occamaroz in forum Computer & Tuning
    Replies: 4
    Last Post: 12-05-2009, 07:00 PM
  2. codes say lean.....i say rich???
    By jmatt07 in forum General Help
    Replies: 6
    Last Post: 08-19-2009, 02:11 PM
  3. Running lean
    By emotionalpiracy in forum External Engine
    Replies: 5
    Last Post: 11-14-2007, 12:34 AM
  4. Running too lean
    By ddouds2000 in forum General Help
    Replies: 12
    Last Post: 01-03-2007, 10:27 PM
  5. Rich or lean
    By GottaHaveLS1 in forum External Engine
    Replies: 3
    Last Post: 03-01-2006, 09:40 AM

Bookmarks

Posting Permissions

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