Results 1 to 3 of 3

Thread: 2010 Camaro SS with cam - lean spike at tip in

  1. 01-07-2010 #1
    BoostedGTA
    BoostedGTA is offline
    Tuner in Training
    Join Date
    Dec 2006
    Posts
    43

    2010 Camaro SS with cam - lean spike at tip in

    Anyone had any issues tuning 2010 Camaros with heads/cam, etc? Overall A/F is fine on the car, but there's a momentary lean spike at tip in. Any suggestions? Car is an automatic...
    Reply With Quote Reply With Quote
  2. 01-08-2010 #2
    bluegoat06
    bluegoat06 is offline
    Advanced Tuner
    Join Date
    Feb 2006
    Location
    Rancho Santa Margarita, CA
    Posts
    905
    Did you tune VE and MAF, or MAF only ?, if you did the last, you need to disable VE and tune MAF only, and adjust the MAF table as VE lookups were active up to 4000rpm.
    Reply With Quote Reply With Quote
  3. 01-08-2010 #3
    BBA
    BBA is offline
    Senior Tuner
    Join Date
    Jun 2007
    Posts
    1,100
    Lean spike can be minimized by setting transient fuel delay down to 10 reference pulses, then tailor down max mass to keep it from overshooting. Do this in forced closed loop with no PE to keep it at stoich while setting transient fuel max mass. Then do the rest of the tune as you normally would.
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »