I'm going to try the TTC mod to see if I can narrow down the possibilities before I take it back to Twins Turbo for a full diagnostic. (Money isn't exactly flying out of my ass these days.) Please let me know if you have any other suggestions.
Background:
Finally got a little time to look into this today. I took it down to Twins Turbo (Signal Hill, CA) and had them check it out. The car hesitates between 4-4.5K rpms and the max it will boost is 7 lbs. It is more likely to be a hose, valve, etc. problem than the turbo. There are no strange noises, smoke, etc. However, the turbo is still a possibility.
Background:
Finally got a little time to look into this today. I took it down to Twins Turbo (Signal Hill, CA) and had them check it out. The car hesitates between 4-4.5K rpms and the max it will boost is 7 lbs. It is more likely to be a hose, valve, etc. problem than the turbo. There are no strange noises, smoke, etc. However, the turbo is still a possibility.