In reply to:

can I just continue with leaving the vehicle speed sensor unpluged.


Probably not a good idea. If you want firmer shifts, get a Superchip or Diablo chip.

-Ken V. 1998.5 SE Praire Tan Zetec ATX psycho_bass@hotmail.com Roush springs Roush rear sway bar BAT struts 17" Millie Miglia HT3 and a ton of subtle asthetic mods