Are edge tuners any good for a lbz? Not looking for anything crazy just some better MPG. I met a guy with the same truck I have, doing the same thing I am (hauling boats around the country) and he said a trip to Key West from NJ and back has saved him $350 in fuel which is just what I need as I go to Cali every 6 weeks. Since the LBZ has enough power, I just want mpgs. Also my friend can buy these tuners, etc at cost so it will not break the bank for me. If these are ok, what tuner should I go with? Thanks to all!!