Yup yup. I gotta get around to it, but I've been pretty lazy and want to do the tach stuff while it's out. But I probably won't since I think it'll take a while to get a hold of the poster who made the high-res to scale images of a diesel tach.
https://www.wearecentralpark.com/misc...acho_faces.gif

It was September 2001. I was at the Bonneville flats trying for membership in the Utah Salt Flats Racing Association's 130 mph club (standing start, one mile drag race, trap speed of 130+ for membership). I had the Passat stripped of weight and fueling cranked way up. 130 was possible at Boston's sea level, but the thinner air at the Utah altitude really made the car run excessively rich.
The course was marked by parallel black lines disappearing to a vanishing point over the horizon. I lined up at the start and let it rip.
When I returned for my second of five allowed attempts I asked which lane I should use as the first run's guide path was now dissected into two equal width paths.
"No, there's till only one. That black line down the center is from YOUR exhaust soot."
I switch to biodiesel during the drive back east and haven't looked back, although now I can literally look back, and see clearly.

<edit> a friend videoed the run. I'll see if I can extract a still or two for posting. There is a point about 12 seconds into the run where the car is invisible through the cloud.<end edit>

Early this week, a SUV cut me off very agressively at a stop light. His driver side window was down. A bit down the road, he signalled a right turn. My exhaust is on the right. So I blew by him at WOT and sooted him good.

I hate to waste diesel and to pollute, but it was worth it.

My 2006 Jetta TDI has only slight smoke on startup- you have to look for it.

I love it when the attendant runs out to tell me I am putting Diesel in my Jeep Liberty CRD and that will mess it up BAD! I had to make three decals to stop that "hot mess" from happening all the time. This one on the back and two side windows:

https://www.fuelly.com/attachments/fo...8b7eb36a65.jpg

And one more:

https://www.fuelly.com/attachments/fo...78dcee8736.jpg

I do that all the time. I putt along in my truck at 60 most of the time to save gas and when someone rides my *** I just step on it for a second and poison them with some nice smoke. They freak out thinking my trucks about to explode and they stay bus lengths behind from now on :D