The best replacement for wastegate is bov.

The best alternatives to wastegate are rated as following:
★★★★★  bov
★★  boost controller
★★  actuator
★★  dump valve
★★  non wastegate
★★  blowoff valve
★★  blow off valve
★  external wastegate
★  bypass valve
★  diverter valve
★  vgt
★  no wastegate
★  bellmouth
★  external
★  variable geometry
★  internal wastegate
★  blow off valves
  vnt turbo
  internal
  44mm
  44mm wastegate
  tial
  wastegate
  38mm
  38mm wastegate

Your alternative for wastegate is not listed? Suggest!
Speaking about wastegate, one probably shouldn't forget about supercharger.

Other search terms related to wastegate and their ratings are:
★★★★★ supercharger
★★★★ procharger
★★★★ vortech
★★★ manual boost controller
★★★ boost controller
★★ electronic boost controller
★★ screamer
★ turbo
★ boost control
★ screamer pipe
★ mbc
You have in mind a companion for wastegate and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of wastegate in all years. Click on graph for more.
wastegate
bov
boost controller