Took it for a 45 minute ride both hwy and in town. Sounds great when it starts up. Sounds great in town driving with a feather foot. Basically anything over 1300 to 1400rpm it makes it so bluetooth is unusable and the sound in the cab and down right bad. set the cruise at 55 brings me to 1500rpm, bluetooth not usable and drive is obnoxious... soon as you hit an incline..Drone! No way would a road trip be pleasant. Rig is totally unloaded and I'm not gonna waste my time hooking up the trailer. Not sure what they were thinking?
The TRD system drones "yes" but the overall driving experience is better.
The good? Starting the rig sounds bad ass, idling through town sounds good and coasting up to a stop light when it down shifts sounds awesome and at a stop light you can hear the engine run, zero exhaust.
Can't answer the smell in the back window deal as it's 25 outside. Tried it one time and aside from cold all my crap started blowing all over the cab so had to shut the windows!