Did some work with one of these last year. It had been bastardised with some sort of home made chassis/body kit with 2 front wheels.
They'd tried to seal the poor welding on the tank with a kit but the stuff either never set properly or reacted with our new fuel and clogged up everything. Took a couple of fuel pumps and clean out attempts but got it running well in the end.
Have fun.
Cars normally raise the idle a little when the regen is happening, can't comment on a show blower.
I'd bet that engine is fitted to other vehicles, could be worth finding out for info.