Originally Posted by US///M3
The OP at first made it sound like the SC was defective,a more appropriate title would be "Don't let incompetent techs install or troubleshoot your SC."
SC was having issues before
the filter was removed for diagnosing. car always ran with a filter ON
for 1000s of miles until it started having MAJOR boost issues and only hitting 2psi at redline. I think its clear that after the filter was removed the SC sustained further
damage by sucking something up. Hope that clears things up for you.