MIHELA
1-5-6-3-4-2-7-8
TBI does have tables for trans temp. I think you will want CTS to remain intact. Cruise control has tables that are maxed out, so non-issue.
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Do you intend on having the Holley control the ignition timing?[/QUOTE
Yes. I have either a MSD air FAST dual sync distributor for crank and cam position.
I have the Holley HP already it’s an older unit but fully programmable just no trans control.If you were to use the Holley Terminator X Max, that will control your fuel, ignition and trans. Just throwing that out there as an option that may be simpler?
Without seeing TBI software I'm highly inclined to saying it's RPM, VSS, TPS, and maybe trans temp. Trans temp has a say in the Vortecs if they get too hot. RPM is used for WOT upshifts, VSS for part throttle on the Vortecs. Cruise control also dictates an alternate shift pattern in the Vortecs, but I have my doubts there for the TBI stuff.
TBI reads trans temp through thermister mounted in the pressure switch in the valve body.TBI does not have access to the trans temp as far as I know.
Clarification. I dont know if it does. But even if it does it would be through wiring that would remain intact even if you remove the stock FI system.