i agree with bbram
the smarty is the way to go. as far as your tranny shifting, banks or snarty has nothing to do with it.
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07 5.9 2500 4x4,qc,48re smarty revo, banks six gun,banks 4 in. exhaust,isspro pyro, boost, trans temp,no cat,no silencer,aem torque tube,modified air box,suncoast tc & vb, maghitech trans pan, more to come