I'm working on a 2010 Raptor with the 6.2 upgraded with an ATI ProCharger. The 6R80 trans shifts fine in all gears except the 3->4 shift. The shift is commanded and by the time the shift fully completes, it's 1.27 Sec's later. According to the Transmission > Shift Properties > Clutch Fill Time for the 3->4 shift ([ECM] 40224), it was showing 0.5 Sec's from 2000 -> 6000 RPM. The main issue is at 3000 RPM and up, where this flare is noted by a 240 RPM increase. I changed the table from 0.5 to 0.4 Sec's from 3000 RPM and up, but it made no improvement in decreasing shift time. If I noticed any improvement, I would just keep reducing the Clutch Fill Time.
The Line Pressure Max is set to the factory 150 psi value and during this shift the Line Pressure PID shows 130 psi, so I don't think increasing the Max Pressure will help. I wish I could increase the Line Pressure for this shift, but the Line Pressure Translation Table ([ECM] 41221) makes no sense with Pressure values (across the top of the columns) being 5.0 -> 62.0 psi. What about something closer to 150 psi on the high end of this scale? The left side of the table shows Trans Oil Temps from 5.0 -> 46.5 F. ATI did not alter this table as they were just as baffled by the constraints on this table as I am. Further, the table is populated with fractional values less than 1.000, so how in the world does this corelate to Line Pressure?
I don't seem to be able to increase Line Pressure, so I need to reduce the shift time. How is this accomplished?