You'll need an on off switch if you wire it that way, it'll kill the battery. I sent a pic to crash21 of the proper ignition wire to tie into. I'd post it but it's on my phone and I sent it in for repair. Do you still have the picture to post for them Crash?You are talking about the auto tune for the PCV right? I planned on wiring mine straight to the battery. I am just going to run it to get the map tuned in good then take it off. I heard they can wear out over time and I figured I would just get a good map done now then hook it up again later if I thought the map needed adjusting again
The O2 sensor isn't going to wear out anytime soon if your running regular unleaded gas. It should last years.