So I replaced the IACV and gasket. Now the idle stays at 2200 rpms without the fluctuation. I do have an ECT coming just because you never know, and it looks like crap. No new codes. TPS still tests good. Idle will still drop to normal for 3 seconds then jump back to 2200rps when I disconnect the MAF, but the MAF tests fine off the vehicle and on...O2 sensors are reading within specs. Looks like I'm gonna be saving up for a Hawkeye from Atlantic British.