I am still experimenting with the Maco IR film and Pyro. My tungsten speed is around 50, with NO FILTER. The negatives could still stand a little more exposure, so next I'll try 40 and 32.(posted 8155 days ago)For daylight with a #87 filter I am getting a speed of 3, (sometimes slower!!)
Developing in PMK 20+40+1000 13min 21degrees C, agitation 4 inversions every 15 sec. 1min presoak to get rid if the antihalation coating. I use Kodak rapid fix, but I do not add the hardener. Distilled water for ALL the development, stop, fix and wash (6 water baths 5min ea) Negs have been ok for condenser enlarger, but a little thin for the diffusion enlarger. Next roll, I'm going 15 min development, and increasing exposure by 1/3 to 1/2 stop (bracketing like crazy, as with all IR films)
If you find another combination of exposure/development/filter that works post it and let us all know:-)