hey need thoughts I have a 2007 F-150 5.4L been running a Edge Evo 15051 tuner and I did have to re-build the transmission so I did a TransGo stage 2 shift kit, and I bought a K&N 57-2556 but took it off due I learned it didn't mesh with my canned tunes on my edge. Was thinking of getting 91 tow and 91 performance and was wondering if I would be able to keep my trans only tune but still get I tuned for K&N(if I need to) and whether or not they tune for a K&N cause I don't want the headache I got last time. And if I take the stock muffler out and put in a flowmaster super 44 do I have to get everything re-tuned

 

The custom tune from PHP will include specs for your transmission and the K&N. A cat back exhaust change does not require a tune.