Results 1 to 4 of 4

Thread: 393 lean idle problem

  1. #1
    Tuner in Training
    Join Date
    Dec 2009
    Posts
    13

    393 lean idle problem



    i have a ls1 stroked to a 393 and i'm having a had time tuning this beast ...

    it starts and than runs lean 17 +

    No matter what i do i cant get it to richen up at all any help would be great

    i have attached the tune and log ..

    the tune is just the start up one and will need alot of work i no ...but for now im just looking for input to work out the idle problem im having

  2. #2
    Tuner in Training
    Join Date
    Aug 2009
    Posts
    41
    I am having a similar problem. The car fires up great when cold but quickly goes lean as soon as there it warms up or if it has run for a few seconds. I'm SD only at the moment and not making any progress with the issue.

    What version software are you using? I have 2.22.3152.18236 and can't open your tune.

  3. #3
    Advanced Tuner Rinkrat456's Avatar
    Join Date
    Apr 2011
    Posts
    416
    I can't say I agree with your fueling or spark tables. Perhaps try forcing open loop speed density for the meantime while you dial in your fueling. Start with a 6.0L tune for the VE table since that's the closest engine to your displacement, then go from there. Your VE table is horrendous.
    -Patrick
    Click for >>Idle Tuning Guide

  4. #4
    Tuner in Training
    Join Date
    Dec 2009
    Posts
    13

    Thumbs up The Fix

    Ok guys

    i had to go back to basics and do a idle tune and start from there ...i have the car idling perfect and just about to work on to the VE table and spark tuning

    idle

    i drop the base down to 5 (60-140c) and worked up bye .5 till i got where i needed it

    injector data

    was a pain but now i have it pretty close to perfect