But this dude (supposedly) dyno'd at over 700 horsepower while off by 15 psi. That's impressive for a street vehicle even if it's owned by a spammer.
My first instinct is that this post was the creation of some sort of neural network, which would astonish me frankly because it is very coherent and all the numbers and details make sense based on context... It would be the best (or luckiest) of its kind that I've come across.
Basically this is either a human who happens to have both a diesel hotrod and an escort service, or it's a bot that has passed the Turing test. Either possibility is intriguing. Or somebody is researching and hand-typing context-specific posts on a bunch of forums just to advertise an apparently-broken link to an escort service? That somehow sounds like the most implausible of the three scenarios.