The best replacement for sct is diablo.

The best alternatives to sct are rated as following:
★★★★★  diablo
★★★★★  edge
★★★  superchips
★★★  spartan
★★★  refractor
★★★  msbt
★★★  newtonian
★★  predator
★★  bama
★★  adhd
★★  mak
★★  h&s
★  diablosport
★  cobb focus st
★  dob
★  bullydog
★  1/8 buggy
  hypertech
  scc
  diablosport tuner
  edge programmer
  diablo tuner
  dobsonian
  maksutov
  sc10
  diablo predator

Your alternative for sct is not listed? Suggest!
Speaking about sct, one probably shouldn't forget about custom tune.

Other search terms related to sct and their ratings are:
★★★★★ custom tune
You have in mind a companion for sct and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of sct in all years. Click on graph for more.
sct
diablo
edge