...but you could have said that with SDI lamps, the cost-benefit ratio is hardly worth it due to minimal reserves, or that the soot limit is reached very quickly.
And that on the pump, it doesn't say "VP 37" in large letters.
We don't have to reveal everything, especially since the last customer probably hasn't held a diesel filter in their hands in their entire life...
I'm not sure if it makes a big difference on naturally aspirated engines, but it definitely paid off when I installed it on my 1.6 naturally aspirated engine, as the rev limiter on the ESP was holding it back.