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Originally Posted by DP03
I posted a few questions on chargerforums, but my main one is:
How do you change the stall of a torque converter with a computer reprogram? As far as I know, you can't. This is a mechanical funtion of the TC and is controlled by the stator fin angles and other mechanical funtions. I understand the shift firmness and shift points (a little nervous about changing shift firmness with line pressure, not usually a good thing), but stall speed is independent of those things.
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The Calibration we have is what would be considered an AMG vs Mercedes difference, its a "sport tune" and I dont think many people will disagree that the shifting is a bit lame on the srt's in certain area's, and we have the ability to futher tune certain aspects for specific applications, we are also working on the ECU with a list of goodies we want....coming soon
Here is excert on how the calibration is handled on the Torque converter
the TCM can duty cycle the torque converter lock-up solenoid to achieve a smooth application of the torque converter clutch. This function, referred to as Electronically Modulated Converter Clutch (EMCC) can occur at various times depending on the following variables:
Shift lever position
Current gear range
Transmission fluid temperature
Engine coolant temperature
Input speed
Throttle angle
Engine speed
When the stator is locked against the freewheeling clutch, the torque multiplication feature of the torque converter is operational.
Scott
GS Motorsports