If the houses in neighborhood are not dense front to back, maybe a down-turned pipe and a window fan running off convenience outlet might lessen the fumes that get into house. I prefer a turn down on my 802 over an exhaust flap, as it is less prone to rattle and still keeps melting snow out. I suppose one could incorporate a similar idea using the engine cooling fan, but would take more plumbing. This strategy is used on skid steers to keep operator out of the fumes, by blowing exhaust up out of operating area.
One thing I'll say about the DPF, I have one on my mini trac loader with a 37HP Yanmar, and the lack of fumes is nice when you have to work standing behind the stack. Glad I don't have any of that stuff on my trucks though.