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Thread: Idle Tuning

  1. #1
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    Default Idle Tuning

    What AFR are you guys trying to tune to for idle at normal ops temp 14.63 or something leaner?

    I have a Map logging IACDES_B by ECT, but all the readings log in PARK/NEUTRAL and I have a MN6 but my Desired Air Flow by ECT has both In Gear and Park/Neutral columns with all the data in the In Gear column.
    Is something wrong here?

    Thanks
    Lonnie
    2002 EB Coupe, MN6
    Xtreme TTi Twins @8psi, Dual A-pilar gauges - fuel&boost, x-pipe, Borla Straight Twin Oval from Cats on back, Hurst Short Throw, CCW 3 piece rims - 18x9.5/275-35 and 18x11.5/335-30 Pilot Sports

    Drive it like you stole it!!!!!

  2. #2

  3. #3
    Junior Member MCG's Avatar
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    9.12:1 A/F






    Oh, but mines on alcohol

  4. #4
    Guess who's back!!!! Black02SS's Avatar
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    Default

    Depending on the car anywhere from 13.8 to 15.0

  5. #5
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    Quote Originally Posted by MCG
    9.12:1 A/F






    Oh, but mines on alcohol
    You should join the alcoholics anonymous forum!

  6. #6

  7. #7
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    Just to add something here and please correct me if I'm wrong. The best idle you will get is when you're making the most vacuum. To optimize your idlle, the combination of timing and afr will be such that you make the most vacuum. Make sure to scan your vacuum as you adjust your timing and afr and look for the point at which you make the most vacuum. Now, you do have to be careful because although adding more timing may smooth out your idle it will also cause your car to surge. Add timing slowly and once you reach the point where your vacuum reading no longer changes stop. You may even want to back off the timing a degree or to at that point to see if it makes any difference. Before making changes, always give the engine a chance to stabilize itself. As has been stated, use the bidirectional controls in the scan tool.


  8. #8
    EFILive Reseller ringram's Avatar
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    Highest vacuum and leanest is what I understand. "lean best idle" on google will throw a few hits.
    Get EFILive in europe (http://www.efilive.eu).
    2007 Escalade ESV L92 6.2L VVT.
    2014 VF SV LS3 Maloo.

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