k if you are towing alot I would strongly suggest the edge juice with attitude just simply because out of the edge and smarty the edge comes with an in cab controller so you can watch youe egt's, oil pressure, trans temp, boost pretty much watch anything you want as if you were to buy a smarty you'd have to buy gauges if you dont have them already... and also the edge you can adjust on the fly as were the smarty you cannot ( i believe )
the edge is super simple to install. if you can read the English language, then you can install it fairly simply. if you know anything about your engine, then it's even easier. it has alot of pics to demonstrate
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