Are these AFR's too lean?

Discussion in 'Technical' started by kawasakirider, Oct 26, 2012.

  1. kawasakirider

    kawasakirider New Member

    Messages:
    1,033
    Likes Received:
    0
    Trophy Points:
    0
    Hey everyone, my car is tuned like shit at the moment, but it's going in for a tune next week. I've been reading up on AFR's and it seems at idle it is really lean. Could this explain why it's hard to start?

    [​IMG]

    Would you guys advise not to drive the car too much before it's tuned?
     
  2. SRB-2NV

    SRB-2NV #TEAMROB

    Messages:
    2,541
    Likes Received:
    81
    Trophy Points:
    48
    Lean at idle is fine, under high load a few tuners would be tuning for 12:1 AFR on a lightly modded car, while others would tune closer to 11.5:1. The real question is, do you have a timing map/table that you can post up?
     
  3. kawasakirider

    kawasakirider New Member

    Messages:
    1,033
    Likes Received:
    0
    Trophy Points:
    0
    Thanks Eric. Sorry for being paranoid, a mate just asked me to watch a Nistune video (he wants to tune his R32 himself) and I noticed that my values were a lot leaner than they were dealing with.

    SRB_2NV, nah mate, that's basically all I've got at this stage.
     
  4. foremannz

    foremannz New Member

    Messages:
    73
    Likes Received:
    0
    Trophy Points:
    0
    Yeah, I've seen idle values in that range on the dyno too, but when the boost comes on, between 11:1 and 12:1 seems to be the safe zone. Just looking at your dyno, it comes on boost really quickly, then stops like its being limited - have you checked the ECU fault codes for errors?
     
  5. wooshka

    wooshka New Member

    Messages:
    94
    Likes Received:
    4
    Trophy Points:
    0
    It has no boost solnoids and no after market boost controller, that why it is only reaching 6.5 psi.
     

Share This Page