I searched but could not find answer to this question. How does the PSE compare to stock S exhaust on a 997S when the switch is off, is it the same sound? Also is it possible to use another switch to turn it on-off at will, finally is it much louder than stock S? As it stands the stock S has a nice throaty sound with a nice resonance at around 4k rpm, do these change, get better, etc. any description by a poetic forum member would be much appreciated in helping me unload the $3k that are burning a hole in my pocket. Also is it better to do PSE or sport shifter first if on some sort of budget? Thanks in advance...