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JTR178
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ShadowsPapa
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They have nothing at all to do with tunes, performance, the engine in any real way.
You don't install jscan. It's software that allows access to settings in the various systems.
Jscan sits on a phone or tablet, you install it on the phone or tablet, it allows access to read DTCs, log system settings, change things like tire size if you change tires, change lighting settings if you change from halogen to LED lighting, that sort of thing. It's not installed. It's an interface - a window into the settings in the Jeep
Tazer is similar, but is hardware based.. It allows access to change settings that Jeep allows you to change, and also pulls some live tricks, but has zip to do with performance, mph, anything that would make it drive or behave any differently.
Instead of using a phone or tablet, it uses the buttons on your steering wheel and messaging on the cluster display to change settings - can likely change the same stuff jscan (or much of what AlfaOBD can do)
Since it sits live in the system it can pull some tricks like killing the license plate lights when you are in reverse, keep the idle speed up for winch use, turn on the backup camera when you use the turn signals (I believe it can do that if you wish)
If mpg was a concern, bigger tires and a lift aren't things to do......... those will drop mpg. More rubber on the road means less mpg. Higher sitting means more drag, more air caught under the truck. And adding weight like steel bumpers, that sort of thing - definitely drop mpg. It made about a 2 mpg difference in my Overland. I lost mpg when those things went on, I gained it back when I took them back off in prep for trade.
Stock Gladiators get the best mpg over-all.
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