This is on a friend's car, actually it is happening on two of his cars - both are forced induction. One supercharged / One twin turbo.
The SC is a DSS306 with a NOVI 2000 running ~8-10 lbs. of boost
The TT is a 377(stroked 351W) with twins(60mms,I think) and 10-12lbs of boost.
Both of them...