A/F ratio under boost

Discussion in 'Performance Mods' started by BLACK10, Jun 14, 2006.

  1. BLACK10

    BLACK10 Full Access Member

    Messages:
    51
    Likes Received:
    0
    Joined:
    May 18, 2006
    Location:
    Panama City FL
    what are you guys seeing as far as your A/F while regular driving vs while under boost mine has been running 14.7-15.4 just driving around then when i get on it hard the A/F gets real rich drops to 10.1 dont know if it goes any lower than that that is as low as the gauge reads just wondering if this is the norm or do I need some more tunning done?
     
  2. Blakewilder

    Blakewilder Full Access Member

    Messages:
    2,382
    Likes Received:
    0
    Joined:
    May 19, 2006
    Location:
    In Nowwhats Guesthouse
    You r VERY rich at WOT! You should be 12.5 ish...Your losing alot of power cuz your pig rich. Its safe tho.
     
  3. Scrambler1

    Scrambler1 Full Access Member

    Messages:
    1,662
    Likes Received:
    0
    Joined:
    May 25, 2006
    Location:
    Savannah, GA
    Yep way way rich. Around 11.5 at WOT will give you more power and still be relatively safe.
     
  4. BLACK10

    BLACK10 Full Access Member

    Messages:
    51
    Likes Received:
    0
    Joined:
    May 18, 2006
    Location:
    Panama City FL
    I ordered a meth injection system from D.C so when it comes in I will have it all re tuned and pick up some HP.....I hope
     
  5. Blakewilder

    Blakewilder Full Access Member

    Messages:
    2,382
    Likes Received:
    0
    Joined:
    May 19, 2006
    Location:
    In Nowwhats Guesthouse
    You def will if you lean it up a little
     
  6. Dave T(BADVENM)

    Dave T(BADVENM) New Member Supporting Member

    Messages:
    2,366
    Likes Received:
    0
    Joined:
    May 19, 2006
    Location:
    Danko's head
    at "full" boost I'm consistent around 11-11.5
     
  7. Blakewilder

    Blakewilder Full Access Member

    Messages:
    2,382
    Likes Received:
    0
    Joined:
    May 19, 2006
    Location:
    In Nowwhats Guesthouse
    Thats why I dont get your low dyno numbers.....You should be over 600 for sure.
     
  8. BLACK10

    BLACK10 Full Access Member

    Messages:
    51
    Likes Received:
    0
    Joined:
    May 18, 2006
    Location:
    Panama City FL
    mine are low also last time I was on the dyno i put down 560rwhp hopefully I will see the 600's after leaning it up a bit and pulling out a little timing along with the meth injection
     
  9. BOOMER

    BOOMER Full Access Member

    Messages:
    1,041
    Likes Received:
    0
    Joined:
    May 19, 2006
    Location:
    Evansville IN
    the cruising af is normal, the ecm is in closed loop till about 75% throttle. your fmu is too rich, what ratio od discs is in there?
     
  10. Blakewilder

    Blakewilder Full Access Member

    Messages:
    2,382
    Likes Received:
    0
    Joined:
    May 19, 2006
    Location:
    In Nowwhats Guesthouse
    Does he have a Vortech Super fmu? I think he's using the Paxton kit.
     
  11. Jeff

    Jeff New Member

    Messages:
    29
    Likes Received:
    0
    Joined:
    May 19, 2006
    Location:
    Massachusetts
    here is the dyno from my 03 cobra.....under full boost ~15psi right around 11.8-12.0.....this is with a twin screw blower, hense the torque "curve".
    [​IMG]
     
  12. Blakewilder

    Blakewilder Full Access Member

    Messages:
    2,382
    Likes Received:
    0
    Joined:
    May 19, 2006
    Location:
    In Nowwhats Guesthouse
    I bet that thing SCREAMS!
     
  13. Dave T(BADVENM)

    Dave T(BADVENM) New Member Supporting Member

    Messages:
    2,366
    Likes Received:
    0
    Joined:
    May 19, 2006
    Location:
    Danko's head
    Oh I wish I still had my '03 Cobra. One of the best bang for the buck mod-wise.
     
  14. Scrambler1

    Scrambler1 Full Access Member

    Messages:
    1,662
    Likes Received:
    0
    Joined:
    May 25, 2006
    Location:
    Savannah, GA
    My brother has an 03 with very little mods engine wise, pulley, controller, tune, and we're pretty much neck and neck from a roll. His complete suspension setup helps him leave me from the line.