I seem to be experiencing the reverse of what I've read about Vanagon
syndrome (tried searching the archives). Highway speeds and cruising
for hours is fine, but off the mark acceleration and low speeds are
*really* bogging down. If I ease into acceleration I'm okay, but if I
push any significant gas off the line the van struggles a LOT and
doesn't want to go. Accelerating from say 40-55mph on the highway is
fine also. Doesn't sound rough at all at idle... just doesn't go off
the line.

The only thing I've noticed in the engine bay is that the large black
hose (see photo here: http://www.coreaddicts.com/hose.jpg) connecting
to the air filter housing is very loose (despite my best efforts to
tighten and make fit... going to try some padding of some sort or get a
new smaller clamp). Anyway, could that be it? Too much leaky air
getting in there or something? I kinda ruled out ECU/AFM as cruising
speeds are just fine. If I had dirty injectors wouldn't that effect all
speeds etc? Thanks for any tips. I'm terrible with motors, but will
learn quick with this new Westy. :-)