Temperature vs. Line Pressure Adjustments

A forum for discussing applications and implementations of the MegaShift transmission controller code for the GPIO from B&G. This can control up to 8-speeds and 6 shift solenoids (plus a 16x9 table for controlling a PWM line pressure valve). It has manual and fully automatic modes (16x9 load x speed table), with under and over rev-limit protection, and full data logging of all inputs and outputs (among many other abilities). A TransStim to test your completed board is also available.
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rxl158
Posts: 16
Joined: Tue Mar 15, 2011 8:37 am

Temperature vs. Line Pressure Adjustments

Post by rxl158 » Tue Aug 09, 2016 5:14 pm

Has anyone successfully used this feature? I want to command higher line pressure when the transmission is cold and have it ramp down once at operating temp. I tried changing the values from zero to either a positive or negative interger. After making changes I see some really strange PC PWM% values and the actual pressure(displayed on external gage) drops dramatically and the trans slips.
Thanks for the help and suggestions. Rob
DIY'er with Your help :-)

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