Whats the easiest way to "Snag" the turbo charger 2?
Watch the AH like a hawk and have gil. I got mine for 5mil (second purchase on my server), but the last several have sold for roughly 3.5mil. At least on my server, has been pretty consistently available in small quantities for the past week or so (took several days after the Jan update to show up though). No real complaints on price, I'd certainly have gladly invested the time it takes me to get that gil into farming the attachment itself.
Otherwise, if you don't buy one it's a high level Alchemy recipe requiring a very rare/valuable Vanir Battery (rare drop from the new Celestial Nexus fight). The really annoying thing is that the battery itself is a pretty good equip-able ammo, that can also sell just by itself, reducing the amount that get to lv100+ Alchemists to even try to synth/sell.
Now, I've yet to see a single Vivi-Valve II auctioned since it uses the same Vanir Battery. Not that Vivi-Valve II is particularly impressive... I'd much rather see crafters making Turbo Chargers available, since it will likely be hands down the best DD puppet attachment after the Feb update.