Hey JR. The MAP sensor there up on the firewall has a delicate little tube running down/up to the little rubber plug on the TB. That's gotta be really nifty because if the MAP doesn't get good vacuum it.. will......run like yours! (Think you have your foot in it and tell your ECU to dump more fuel).
(Your Renix Jeep will cut off the fuel and give it nothing but air if you floor it, cranking) Idk. What the smarter ones do.