Auto gearbox tuning - Upshift pressure MOD time limit

[Stringyweevil]

Im changing my shift pressures on my VY V6 for some quicker, firmer shifts and I came across these tables called Force Motor - Upshift pressure MOD time limit and I have no Idea what it is for. I changed the values slightly and didnt notice any difference in how it felt. Does anyone know what it is for? Thanks in advance!

[charlay86]

It is the period of time since the start of a gear change that the force motor pressure control logic uses the upshift pressure modifier value until it reverts to using the Gear vs. TPS pressure offset.

[Stringyweevil]

I don't fully understand the upshift pressure modifier either. Stock it's set at 3PSI. I have only used the table of TPS vs KMPH to change the PSI of the shifts. Say I have a shift pressure set at 90 on that table, does the shift pressure modifier set at 3PSI mean that it will shift at 93PSI?

[ejukated]

Yes but no... Pressure is max limited

[Jervies]

Some of the xdf's have ghe max pressure defined so you can up the max pressure so it will shift at 90 + the modifiers