Ok, I've been driving this thing for almos 2 weeks trying to decide if I want to buy I from a friend. It's a 1987 300D turbo sedan with 250,000 miles and some appear to have been less than kind. It drives well and has good power. I think the only things working in the vacuum system are the brake booster and the shut off solenoid - rest is unplugged and not working. Tranny shifting is all screwey as to be expected by vacuum issues.

It does have a 14 head. Seems to have no crack symptoms - hose goes soft when it cools off, doesn't build pressure too fast, etc.

I hooked up a boost gauge today and drove it some. Seems to me to have massive boost lag. Takes about 3 - 4 seconds from flooring to build full boost. When it finally decides to come on it builds quick to about 13 - 14 psi. Once boosting a little it comes on fast and makes good power. Car is not slow overall, but painfully slow 0 - 15 mph. Oh yeah, tranny is starting in first and alda is removed. Puts out black smoke until boost comes on.

The trap oxidizer is long gone. The exhaust looks like a factory system, and only has what I assume is a resonator and then muffler at back. Did the update have a cat or trap in the system? Would the thing I assumed was a resonator be a cat or other type of trap?

So - any thoughts on the boos lag?