I recently resolved a LONG standing stalling during take off issue on my 08 JK by PCV valve replacement.
It was actually resolved by the dealer under warranty using a Technical Service Bulletin (TSB) but,,, just installing the correct PCV made all the difference in the world!
I as did the dealer thought it was a defective Throtte Body.. The TSB was linked to that repair.
Heres a link to a post that I started on that stalling issue: