johnmaster
April 22nd, 2012, 12:44 PM
How do I tell what is slipping and if I can fix it with the tune? Thinking I am going to have to get a shift kit or dish out for a better trans.
99 silverado 5.3 4l60e 2wd 224000 miles, turbo running about 6 lbs right now. Part throttle shifts are crisp but I cant imagine them ever getting firm enough to chirp the tires, they just feel appropriate now that the desired shift is at .2 seconds and pressures are increased a bit (I just copied the performance pressure column to the normal column). full throttle shifts take a long time, about 1.2 seconds from rpm peak to valley, pressure is pegged at 90 during the shift and trq figure is appropriate. Latest drives I took were at 0 seconds desired shift time and still took over 1 second to actually shift.
How do I know it is trying to do everything it can properly but still slipping the clutches? Any cheap bandaids I can do to this thing before I finish it off:)
99 silverado 5.3 4l60e 2wd 224000 miles, turbo running about 6 lbs right now. Part throttle shifts are crisp but I cant imagine them ever getting firm enough to chirp the tires, they just feel appropriate now that the desired shift is at .2 seconds and pressures are increased a bit (I just copied the performance pressure column to the normal column). full throttle shifts take a long time, about 1.2 seconds from rpm peak to valley, pressure is pegged at 90 during the shift and trq figure is appropriate. Latest drives I took were at 0 seconds desired shift time and still took over 1 second to actually shift.
How do I know it is trying to do everything it can properly but still slipping the clutches? Any cheap bandaids I can do to this thing before I finish it off:)