Auto limp mode puts it in a higher gear all of the time. 3rd I think, maybe second. It won't have any balls from a stop, but you can easily go more than 20 or 30. 55+ is no problem in limp mode. You have a different issue.

1992 VR4 12.5 @ 110 - SOLD
1993 Stealth RT/TT 11.4 @ 129 - SOLD
1991 VR4 9.2 @ 159 - Old Shop Car
1992 Stealth Twin Turbo ATX - SOLD
1990 Montero LS LWB - RIP
1995 Montero LS - RIP
1998 Montero
1992 Galant VR4 474/1000
2007 Prius