RU479
Active Member
It’s a tier 3 filter I believe. And it was put in place after studies showed that people in the coaches closest to the locomotive are more susceptible to emissions emanating from the engine.I have a question. What is this odd block looking piece on top of the go transit mp40ph’s?
I noticed more units are appearing with them on the roof, and the engines are quieter with that piece installed.View attachment 419455