Keep in mind - the dealer/FCA can see if he PCM was unlocked - and how many times it's been flashed.
WAY BETTER OFF getting a new unlocked PCM and swapping it in (for warranty purposes). Don't give FCA any reason to deny a claim (and an unlocked PCM is a valid reason). And I have an FCA 7yr/unlimited extended - so I'm going for the swap if I do anything PCM related.
I'm waiting to save some spare $$ for the Mopar CAI/CAT Back & PCM - Diablo tells me with their "canned tune" for this config, it's good for about 60HP/TQ. Personally, I'd spend the $$ just to get the governor removed. It's irritating beyond belief.
I posted a similar question a few months ago about the limiter - and got a lecture from someone about "driving so fast on public roads". MYOFB.
YMMV...
Rick