Reminds me of that Myth Busters episode where Adam and Jamie ordered every gas saving gadget and none of them worked.The only thing that helped was a tune up.Still enjoy going to the Discovery+ app and watch an episode or two.
The amount of bull crap people gobbled up before the internet.
Actually never mind the internet helped with distribution of bull crap to stupid people.
This topic reminds me of that ping pong ball air test that K&N filters used for their air flow advertisements that were sitting on the counters of performance shops back in the day. You swore it was a massive change in air flow just by that test and you just had to make more power as a result of it.