ok this a wierd one. wastegate spring is 21pounds i have the controller hooked up right. i get it to 26psi and when i go to turn it back up to 28psi . car only boosts at 21psi. so i turn it back down where i had it to do 26psi and it still does 21psi.

couple pulls later without changing something it goes to 24psi. can a manual FORGE
Boost controller go bad?

 

Stock turbo and stock WGA?

 

Forge MBC's look really nice, but perform like crap (like all their products). My friend just tested one yesterday and it was of course broken.

 

i have the buschure fs635 kit with the tial external wastegate.

 

sounds like something is def wrong with your BC your onbly boosting wg pressure so try switching the BC and see if it happens

 

just wanted to see if they could even go bad?