Here is the article I was using for most of the info.
Air Flow Meter (AFM) - from "The 944 Motronic DME" by FR Wilk* ©2001 www.the944.com There is also some stuff in Youtube as well.
The biggest improvement is the part throttle surging is GONE. Also, idle is less choppy.
I had picked up a used AFM from eBay, did a basic bench test that showed no major issues, and had a service tech install that a few weeks ago, to help (hopefully) pass smog. It did pass, but ran like crap - much worse than my original, so that's what prompted me to rebuild my original and swap it with the eBay one. I now have an extra AFM that I plan to rebuild and sell. Anyone interested?
BTW, here is some
video of the Elky(it's still 'in-progress')