lol, go eat a cabage
so tell me then, what car do you have? and why the fuck did you come here asking for help if its not a GTR, and its not a nissan?
while in most cases its nearly impossible to have a stupid question, i think you have actually found one...
if you claim to understand how sound waves work then why the fuck are you asking for help... oh i know why, because you dont know shit... thats why you are trying to have a chainsaw sounding car...
lemmie guess your a 16yr old fan boi ricer who wants his car to sound like ass...
im sorry but go ask for help in some other forum because you wont get the answer you want here...
you are trying to get a v6 to sound like a raspy 4cyl... and the reason they are all raspy is because they either run a straight pipe, or they run a coffee can fart muffler...
and that muffler if they use it is prolly a hollowed out piece of junk...
and since its also obvious you know NOTHING about cars you should sell it and get a moped, the whole point of a muffler is to muffle the sound, and usually that means it removes the high pitch rasp...
if i take off the muffler from my DD o3 dodge neon and went with a straight pipe i would get all that raspy nastyniess you so desire... but a straight pipe on a GTR32 will just sound loud and bassy because its the engine that makes the sound... not the muffler or exhaust
so unless you swap out your v6 for a 4banger you are unfortunealty stuck with a rumblin car...
im still astonished thaty you want your car to sound like shit