SD2 1/4 run, way to Rich

Discussion in 'SD and SD2 Chip Support for Buicks' started by STF420, May 2, 2019.

  1. STF420

    STF420 Well-Known Member

    Hi Guys,
    Not sure what i missed? Testing my Chips I have 6.1 (ran 11.3 116) then switched to SD2 ran smooth but way rich and slower 12.1 109. Target AF 10.8 actual 9.6? See log. Alky set at 8. same as 6.1

    Stock Long Block (New 980 comp springs), Stock MAF, Stock Rear, Stock suspension, 275/60-15 ET streets, 3650lbs W/driver, 5831 turbo, GN1 Extreme front mount IC, IAT in up pipe , Closed Ex (Pypes), 3.5 DP, L/U converter 9.5 Protorque Not Locked, Homemade Grainger Bst control, Power Plate, 60# inj, Razor Alky, 1 Air Bag, AEM 3.5bar, LC-1 WB.

    Thanks, Mike
     

    Attached Files:

    Last edited: May 2, 2019
  2. EricM

    EricM Administrator Staff Member

    You have to tune the SD2 for your setup.
     
  3. STF420

    STF420 Well-Known Member

    Hi Eric,
    I found another Log from ride home from track. (See attached)
    Parameter 8 set to 90 was 128.
    Alky compensation?

    Thanks, Mike
     

    Attached Files:

  4. EricM

    EricM Administrator Staff Member

    Yes with alcohol you typically have to bring the fuel down or it will be too rich. How much fuel depends on how much power the engine makes and how much alcohol you are spraying. You can adjust the VE table to take out more fuel if necessary, or change certain RPM points.
     

Share This Page