I got like 1 mpg out of the 87 tune but having to reprogram it every time I'm loaded down bugged me so I've been running stock tune now. I mounted my flash pack in the jeep right by the a pillar and use it as a gauge cluste while I drive. I monitor temps voltage and stuff like that I think it's a good use of the system it can display 4 gauges at once and this featur makes the price worh it to me.
I have the 4.7 Liter and have been running the 91 tune for years now. I wasnt impressed with the shift points of the 87 octane tune.
2007 4.7 Liter XK | Front Modified OME HD Lift | Rear 4" Superlift | JBA UCA's | Rusty's Rear Adjustable Track Bar | Rysty’s Adjustable Upper and Lower Rear Control Arms w/Heim Joints | Mickey Thompson Classic III 17x9 Wheels | 315/70R17 Goodyear Duratracs | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front Electronic Locker | Rear Heat/AC Delete
I use the 91 tune & its ok, the tranny shifts feel better than stock so stayed with it. I do hope they do refine it some more to improve it. Maybe someone should include Scott from Superchips on this thread.
PJMJR508
(Happy Jeep)
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