that is a nice combo for a TJ, pix?
i think you can get 16 easily with that setup, does it have the 30" tall tires? (an option for the Sport)...i have a similar equipped Sahara and I am seeing 17.5 mpg all stop and go driving and 19+ all highway driving but mine is a 5-speed manual.
2002 Wrangler Sahara, all stock, 5-speed, Dana 44, duel tan tops, 2nd owner.
2008 Hemi Grand Cherokee Limited 4X4, Quadradrive II, original owner, 22,000 miles.