Dynamic Efi w/ 4+3 trans tuning

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Oct 28, 2022 | 02:15 AM

88z52

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From: Idaho/Utah

Dynamic Efi w/ 4+3 trans tuning

so im trying to set up a programmable ecm in my 88, does anyone have experience with the parameters in these? im trying to set it up so it wont shift out of OD in any gear when its above a certain rpm even if its over my tps limit settings to shift.
gm did this with a few parameters "Tps Kickdown/TCC Unlock Prevent -not 1st" and "TPS Kickdown/TCC Unlock Prevent -1st Gr." both set to 2200 rpm and "Shifter Kickdown Prevent RPM Threshold" set to 3600 rpm, but they are absent in the ebl xdf. can i pull the hex information from a stock ABTR bin and add into the bin/xdf with tunerpro?
any help would be appreciated

Last edited by 88z52; Oct 28, 2022 at 02:28 AM.

Oct 28, 2022 | 03:05 AM

89onlyZ51

Burning Brakes

Joined: Aug 2006

Posts: 1,061

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From: Seattle WA

No, you can't pull anything from a stock bin and use it on the EBL - two totally different code bases. Rbob over on thirdgen.org is one of the authors of the system and can answer detailed questions about it. I don't have it in front of me, but as I recall, the 4+3 treatment is basically handled like an automatic. RPM, speed, and TPS are parameters (selected gear is not), and the TCC lockup is what's used to engage OD. But, I think that will work for what you want to do. Set TCC to lock at any speed, RPM >2200, and TPS <100%, and that should get you there. Do you have an EBL hooked up, or are you researching with the idea of getting one?

Oct 28, 2022 | 03:27 AM

88z52

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From: Idaho/Utah

I talked to him over email and got a lot of information but I felt like we aren't on the same page. I have the new ecm and am trying to figure out if this is possible, in the ebl xdf it doesn't seem to embrace the function of the OD. More of a turn it off for racing and turn it on for cruising. I need to use od in any gear under heavy throttle without downshifting unless my rpm is under a specific number. Every setting I see currently only references tps and a mph setting for lock and unlock enable/disable. If there's a way to add an rpm setting to prevent downshifting I'd be set. My thoughts at this point are to wire both modules and use the stock one for trans control and the ebl for fuel and spark. Or I'm stuck with manual control of the OD.

Oct 28, 2022 | 03:34 AM

88z52

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Joined: Sep 2022

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From: Idaho/Utah

These are his recommended settings, I did get more info about why it's set the way it is but I feel like I'm missing an important variable

Scalars:

TCC - Lock Enable CTS: -40
TCC - Forced Lock: 255
TCC - LoGr Max TPS% Coast Unlock: 0
TCC - LoGr MPH OK to Lock: 255
TCC - LoGr Min TPS% Coast Unlock: 0
TCC - LoGr MPH to Unlock: 255
TCC - HiGr Max TPS% Coast Unlock: 0
TCC - HiGr MPH OK to Lock: 44 (use to set minimum MPH for OD)
TCC - HiGr Min TPS% Coast Unlock: 0
TCC - HiGr MPH to Unlock: 45 (use to set minimum MPH for OD)

Flags:

"Option Word 2 - Bit 7 - TCC " option to be checked (set)
"Option Word 2 - Bit 5 - HiGrH" option to be checked (set)
"Option Word 2 - Bit 2 - DcTCC" option to be un-checked (clear)
"Option Word 3 - Bit 3 - TccHi" option to be un-checked (clear)

Tables:

TCC - TPS% Opening/Closing Delta for Unlock: 100%
TCC - Relock Delays: 0's
TCC - LoGr TPS% to Stay Unlocked: 0's
TCC - LoGr TPS% to Unlock: 0's
TCC - HiGr TPS% to Stay Unlocked: variable (use to set OD exit on heavy throttle)
TCC - HiGr TPS% to Unlock: variable (use to set OD exit on heavy throttle)

Note: the last two tables above set the TPS% threhold where OD is exited.
Be sure to retain the "TCC - HiGr TPS% to Stay Unlocked" table lower then the other table.

Zero out this table:

SA - TCC Locked Retard

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