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Thread: Anyone have advice on tuning Built 6l90e?

  1. #1
    Tuner in Training Turbostangs90's Avatar
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    Anyone have advice on tuning Built 6l90e?

    Im wanting to test drive the car before going to tuner for WOT tuning. Id like to just make sure everything is solid.

    I had the trans rebuilt with Circle D Level 4 kit, which 3-5-R has 2 extra clutches, and 4-5-6 has an extra clutch and also more surface area.

    My trans builder told me that these areas need to be tweaked or it probably wont even shift into 4-5-6.... Base Shift Pressure, Shift Times, and On-Coming Pressure Presets.

    The trans has a really nice trans tune in it now for the factory build, but i think it still may need tweaking to accommodate the new components.

    Any info will be appreciated.

    Tune is attached.
    Last edited by Turbostangs90; 01-07-2021 at 08:15 PM.
    2009 CTSV Sedan CRT
    TMS 427, Modified Huron Twin Kit, BW-S369s, Greg Good CNC Brodix BR7s, Lil Jon Turbo Cam, PTC converter spec'd by Dusty Bradford, ID1700s, FORE Fuel System, built 6l90

    1990 Mustang tuned using Holley EFI

  2. #2
    Advanced Tuner
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    Did they keep the Wave plate?
    2009.5 PBM G8 GXP M6 W/Roof-Self tune, OBX LTs, Kooks axleback, LSA blower, cam,
    Monster LT1-SC clutch, flex fuel, 12 psi [email protected] 1,800 D.A
    2007 TBSS-Self tune, bolt ons [email protected], 1,900 D.A
    1991 GMC Syclone- Self tune/catback 12.8@104, 4,200ft D.A

  3. #3
    Tuner in Training Turbostangs90's Avatar
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    Quote Originally Posted by STAGEUP View Post
    Did they keep the Wave plate?
    No, it has been removed.
    2009 CTSV Sedan CRT
    TMS 427, Modified Huron Twin Kit, BW-S369s, Greg Good CNC Brodix BR7s, Lil Jon Turbo Cam, PTC converter spec'd by Dusty Bradford, ID1700s, FORE Fuel System, built 6l90

    1990 Mustang tuned using Holley EFI