Ya, I just did this set up about 2 weeks ago. It's gonna cost about $80-100 to have the shop remove them. Under light acceleration, it's quiet like the stock. Under normal acceleration, it's got a higher and louder tone. Under hard accceleration, it's loud (I'd say about 1.3x louder than the stock WOT). There is no drone. It sounds a little raspy. There will be very minimal horsepower gain (< 2 hp). If you want a cheap setup, with a slightly higher and louder tone, without disrupting airflow like the washer mod, I say go for it. I have a video, but I've been too lazy to upload it. Look up the G37 coupe (it has to be the coupe) with no resonators on youtube for a similar sound. It's not quite like that since they have a different muffler, but it will give you an idea.
__________________
|