I've been having this recurring and now constant problem with my '80 vanagon
(California emissions).

At idle everything is fine. Even when I drive at low speeds there's no
problem.  In fact since I've been working on this problem, I've got the van
running better then ever except at higher RPMs. When I depress the throttle
fully the van begins to sputter and lunge.  I can't get over 45 mph.

Here's what I've done already:

1 changed the entire ignition system (coil, wires, plugs, cap, rotor, and
distributor - was worn) properly set idle and timing.

2 changed the o2 sensor and the temp sensor (both needed replacement)

3 cleaned the AFM contact points and checked all ground wires, and ECU
wiring as per Bentley

4 checked compression (105-120 all around)

5 changed the fuel filter, and replaced all vacuum lines

What could be causing this problem?  I'm sure its probably in the fuel
injection but am at a loss what to check.

I'm located in western Indiana, does anyone know of a good mechanic in
western/central Indiana?

Thanks for you help

Gary
'80 westy (down but not out)