Well just got back from getting a custom dyno tune with a few minor bolt ons. Before I was 326WHP and 350WTQ in a 2015 5.7 Challenger automatic. Now after a JLT intake, 87mm ported TB, Borla cat back, JBA shorties, and the custom dyno tune itself I got..... 326 WHP and 350WTQ with a SLIGHTLY better power band. I was told this was due to heat soak and cause its 80 something degrees outside while the base line was taken at 60 something degrees. It was taken on a mustang dyno. Has anyone else had similar experiences? Im not really after a specific power level especially with the few mods i've done but I thought I would have gotten a little more then a very slightly better power band.