PC is controlled via Bluetooth (app on phone) or manually via the unit itself. I opted for a discreet install (unit tucked behind dash). It is a set-it & forget it for me but when I eventually change Pulsar settings back to 6 or 8, the PC will definitely be used to tweak pedal sensitivity to my liking. As for speed of adjustability, my Note 8 is mounted via a magnetic mount to the right of climate control (where the electrical outlet is mounted on higher trims), w/ the PC app open, it's a very quick process to change settings on the fly, simple push of a button, albeit on your phone vs steering wheel. Nice to be able to tone down the pedal for the wife when she drives or when I take it in for an oil change. The PC shines when demo'ing to buddies as well, my dad had a chance to drive mine a couple of weeks back while I was up for a visit, he was a big fan. It's a great combo that I held off on for the same reasons as you.... rising gas prices & my addiction to the more responsive pedal w/ the Pulsar in play eventually won out, no regrets on the purchase.
6 stamps here as well but no autos pending sadly, just cans & SBRs. I do run a Fostech Echo on one of the SBRs though which scratches the itch well enough.