Skeptical of "blade" exaust tip FE / emissions claims

[shovel]

Here's what you do:

Get a C-clamp and a few tampons... slide 'em up your tailpipe (your CAR'S tailpipe) and then use the C-clamp to squeeze down the end of the pipe until it holds them firmly in place. Voila! The strings flapping in the breeze act as vortex generators to fill your car's wake too!!!

From their site:
"Particulate Material (soot) is an air pollutant known to cause grave environmental and human health consequences. Environmental
consequences of PM include: air pollution, water pollution, deforestation, crop degradation, acid rain, acidification of waterways
and smog. Health consequences of PM include: cancer, cardiovascular and respiratory disease, fibrosis, asthma, reduced pulmo-
nary function and increased mortality."

increased mortality? like more than 1:1? I figured the mortality ratio was pretty much fixed at 1 death per living being...

[Frank Lee]

"increased mortality" "1:1" LOL

now, let's not quibble over details...

[Old Tele man]

FIRST, imagine a bullet sitting in the chamber of a gun.

...a round bullet, sitting in a round chamber, leading to a round barrel with a round muzzle.

...shoot the gun and the round bullet travels from the round chamber, down the round barrel and out the round muzzle.

NOW, re-imagine the same scenario with a barrel that has a "flattened" at the muzzle (like that exhaust tip).

...shoot the gun now and you get a KA-BOOM!

...why? Because round "things" (like bullets and gas "slugs") don't take lightly to sudden changes in geometry (read: pressure containment geometry) without equally sudden counter-reactions...like KA-BOOM!!