I received both, I hooked up PedalMax, haven't done Boostmax yet. My opinion - PedalMax is instantly noticeable. Best thing is that i dont have to put it in Sport mode anymore. It used to seem sluggish and shift too quickly in Normal mode so the first thing i would do when i got in was change it to Sport mode and then change to 4 auto (wet roads in PNW). Of course when you turn it off it would default back to Normal mode. Now I just leave it in Normal mode which is snappier with PedlalMax and it remembers the last setting of 4 auto, so I dont have to change anything.
Hooking up the BoostMax soon.