Ok all, I've searched The Samba and tons of other websites for my issue. Maybe one of the gurus here can help. 

I have typical vanagon syndrome symptoms. Driving on highway for a while, then suddenly loss of power and bucking.  Turn off engine, restart and all is good for an indeterminate amount of time. I did notice that just before (10 sec or so) the power loss starts, I seem to have a smoother running engine with a hair more power. I also had the syndrome start and I exited the freeway with very little power. I shifted into 3rd and it chugged a couple of times and the BAM, like a switch was turned on, the van power came back. Drove home another 30 min on highway with no problem.

I have done the following:
35v 22uF capacitor between 2(+) & 4(-) on harness to AFM
New fuel line, pump, filter, tank, and pressure regulator
Refurbished, cleaned and flow tested injectors 
New alternator harness

I have not cracked open AFM. I started to, but I didn't want to screw up anything. 

Any thoughts?  Anyone have a spare good AFM I could test out?  I hate to spend money on a AFM when I could be sourcing parts for either an engine swap or a Megasquirt setup. I'm at my wits end. I drove about 70 miles on Friday and during a 30mile stretch I had the syndrome pop up every 1/2 mile.

Thanks for the help!

Cheers,
Jason Ellis