Not a good thing to do on it's own.
The torque is reduced during changes, to allow the box to do a "soft shoe shuffle" during the change. The TCU does other things to make the change unnoticable. During the 1st to 2nd change the TCU drops the line pressure, and pulses the band on and off a few times to slowly brake it down to speed, instead of just banging the band on.
If the torque is not reduced during the change the band will slip due to the low line pressure and the pulsing of the band pressure.
Removing the dropping resistor, does not keep the line pressure high during the shift as the TCU acts on the A solenoid to modify the line pressure, during the shift.
The way around the problem, as I see it, is to leave the resistor connected, so that the line pressure is varied in line with throttle pressure. This allows the TCU to preform the other duties that it does based on throttle pressure, such as engine braking, ect.
The Small Cars vacuum switch is then used to turn the TCUs control wire to the A solenoid off when the throttle is past 20% or so. With this line disabled during the shift, the line pressure will not be modified down by the TCU. It will just be set by the throttle position. As the throttle is down during hard acceleration, the line pressure will remain high during the change, to prevent the slipage.
This TCU line to the A solenoid should not be just disconnected. It should only be switched off under hard throttle. At other times, we need to allow it connected to preform other necessary duties, such as, varing the pressure with cold ATF, dropping the pressure when selecting D or R from cold, ect.
This change on its own will allow the box to survive hard full throttle changes. Then and only then, could the torque control be modified for a full torque change.
I would recommend that the same Small Cars kit be used to switch the Green/Yellow wire, from the TCU plug C wire no.8. off the A solenoid, and through a resistor to ground, when the vacuum switch activates. Otherwise the TCU will see the open circuit wire and post a code.
Worth a try?
Harvey.
