The best replacement for egr is scr.

The best alternatives to egr are rated as following:
★★★★★  scr
★★★★  non egr
★★★  pcv
★★  weathertech
★★  avs
★  no egr
★  bushwacker
★  def
  acert
  pcv valve
  sgr
  pcv system
  dpfe
  solenoid
  not to egr

Your alternative for egr is not listed? Suggest!
Speaking about egr, one probably shouldn't forget about egr intake manifold.

Other search terms related to egr and their ratings are:
★★★★★ egr intake manifold
★★★ headers
★ emissions
You have in mind a companion for egr and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of egr in all years. Click on graph for more.
egr
scr
non egr