It's a little low. With the too removed you will see a small decrease in mpg.
A good tune up, tires at recommended psi and a good wheel alignment should be 15 mpg or more depends on how you drive also.
89YJ 2.5L TBI, AX-5, NP231 SYE, Ford 8.8, Yukon Grizzly, Tom Woods Shaft, 33" BFG T/As, 4" lift, Warn VR10000s.
AF Jeep Club Tail #184