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Thread: Total Bone-Head Question - Turn on STFT E40 ECM

  1. #1
    Tuner Dave_In_VA's Avatar
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    Total Bone-Head Question - Turn on STFT E40 ECM

    Ok all, I know I turned off STFTs, I'm close to turning them back on.

    How do I do that?

    Sorry for being a total newbe
    2005 Corvette, Z51, 6sp Coupe:
    - TSP ported/milled LS3 heads
    - 11:1 compression
    - Ported OEM LS3 intake & LS2 throttle body
    - 222/230 113 +3, 0 degree overlap w/1.7 rockers
    - Comp 1.8 roller rockers
    - Lift w/1.8 rockers .630/.621
    - Johnson 2110 lifters
    - OEM LS3/7 Injectors
    - LS3/7 style CAI w/blade MAF sensor
    - Std. speed ATI balancer
    - C5r timing chain
    - ARH 1 7/8 headers w/cats
    - C6 Grand Sport MPP Mufflers with NPP in a Box
    - C7 ZR1 Style wheels: 18x9.5, 19x11
    - C6 Z06 Brakes

  2. #2
    Senior Tuner
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    Mar 2011
    Location
    Ripley, MS
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    Quote Originally Posted by Dave_In_VA View Post
    Ok all, I know I turned off STFTs, I'm close to turning them back on.

    How do I do that?

    Sorry for being a total newbe
    Do you recall if you altered the ECT Closed Loop Enable table or the O2 sensor Readiness ECT table or possibly both?
    It'll be one of the two of those tables that is keeping it in open loop. Just put the values for both of those tables back to stock.
    E40 Closed Loop Tables.jpg

  3. #3
    Tuner Dave_In_VA's Avatar
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    Sep 2021
    Location
    Northern VA
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    Ahhh, thanks.

    This is a compare against the OEM tune. I changed O2 Readiness ECT.

    Many thanks...
    Attached Images Attached Images
    2005 Corvette, Z51, 6sp Coupe:
    - TSP ported/milled LS3 heads
    - 11:1 compression
    - Ported OEM LS3 intake & LS2 throttle body
    - 222/230 113 +3, 0 degree overlap w/1.7 rockers
    - Comp 1.8 roller rockers
    - Lift w/1.8 rockers .630/.621
    - Johnson 2110 lifters
    - OEM LS3/7 Injectors
    - LS3/7 style CAI w/blade MAF sensor
    - Std. speed ATI balancer
    - C5r timing chain
    - ARH 1 7/8 headers w/cats
    - C6 Grand Sport MPP Mufflers with NPP in a Box
    - C7 ZR1 Style wheels: 18x9.5, 19x11
    - C6 Z06 Brakes