2002 E53 4.4i - rough idle, surging power.

[Sphengali]

The MAF and TB are both 3rd party, from BAV Auto (just before they shut down)

I was using DIS, but then migrated to Rheingold, but the laptop is so old that it was painful.

I now have a newer laptop, what software do you recommend for effective troubleshooting? I'll buy/load up whatever you recommend to provide better info.

As for sensors from TB, I just did a straight swap of the unit, I didn't see anything to remove from old one to move to new one?

I did a vac leak check, and seems ok, no smoke coming out anywhere.

Rough idle is the same if the new/old/no MAF connected.

Depending upon how many sensors might be the culprit, might it be easiest for me to just order them and swap them all? If cheap enough that is...

The rough idle is constant, and slight variation in RPM, but the throttle also doesn't respond.