Smarty Jr.
Since there was another thread regarding tuners it inspired me to write about mine. I have a Smarty Jr. and have installed the program #2, the tow/haul program. This program is supposed to add appro...
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We’re running a jr. on our 07 - 6.7.....and the performance change is very noticeable. How many horses, no idea....but pretty substantial. When you consider a truck that weighs-in at 7 or 8 thousand pounds, an 75 additional hp, isn’t going to “set your hair on fire”!
