I did it as preventive maintenance, wanting the solenoids to last as long as possible, 150K mls? I do have 80K mls, and they are mechanical, so cleaning them now seemed to be a good idea.
Plus I changed to a 0 cold weight oil (M1 0w40), changing twice as frequently as the original owner, and that will help keep them clean going forward. Does seem a bit stronger mid-high rpm. All it cost was some time and MAF cleaner, and with this DIY it's dead easy to do.