Computer chips
IMHO, if your car is not stock, you won't see much if anything from a Jet or an HPP. And I see that it is not stock (they design the things for bone stock or very light mods).
IMHO, the HPP is an expensive fan switch, and the Jet module... well, it's just a sensor tricker.
I personally don't think either is worth the money. If you pick up a used HPP ($150) then maybe. Just make sure it's unlocked.

-Andrew


o you get from them? How hard are they to install?