Can someone please help me identify / verify the identity and specifications of this turbo? I was told it was a Frank 4 (from Forced Performance??) when I bought it (from someone who knows a lot more about DSMs than I do.) I found the following description for the compressor housing online...
Car is a 1990 TSI AWD Turbo. When my car cold (about the first 5 minutes of driving) I have a pretty noticeable hesitation at lower RPMs and light throttle conditions. When you press the gas about 1/4 of the way down or less, you can hear the turbo spool abnormally loudly but there is no...