the downshifts are not hard at all. this was when I tried to shoot out of the hole, floored. how's that for laymen's terms. lolNo
The connection is between the ECM and the TCM
If you are getting hard downshifts, read the transmission succage thread. You may have failed cam servos or sensers
I was wondering if the boost would not be allowed to increase beyond the 6psi if the transmission wouldn't shift upwards. Now, I guess that it wouldn't matter because even if I gently work the boost up to 6psi it still wouldn't go beyond the 6psi limit. Maybe I just answered my own question?