If you suspect excessive play in the turbo, try this:

Take a close look at the area where the compressor wheel is adjacent to the compressor housing (this is viewable in the compressor inlet). If you see signs of contact between the wheel and housing (shiny marks, scratches), then have the turbo inspected and / or rebuilt. If there is no sign of contact, you likely have no internal problems.

The Mitsu turbos we use have proven themselves bulletproof up to 35 PSI boost in our racing applications, and they rarely fail. Should you wish to have the unit inspected, contact us or any authorized Mitsubishi turbo repair outlet.

Bill Hahn Jr.
98 RS Turbo: 10.87 @ 136 MPH
HRC Stage V with N20
Nation's Fastest Street FWD 2G DSM
www.turbosystem.com