I have the N1 and I like it a lot. I do feel like a ricer kinda cause its so butt loud but its kinda funny

 

Mine has a low deep tone, I hate the high pitch bee noise.

 

You won't see much from an exhaust.
Even with intake, header (not headers, we have 4cyls) and exhaust, I wouldn't think you'd see more then maybe 10whp.

 

lol...if you want it loud as fook, get the N1 and run it without a cat. That would get on people's nerves. I prefer something quite so i got the Apexi WS...sound really nice...

 

i have the evo II and is sounds nice as hell

 

I have the Greddy SP and it is super quiet, probably be going to a WS sometime soon, but that is another issue altogether.

 

N1 is loud. very loud. sounds clean tho...no raspiness

 

noticable power increase as well....just the intake didn't effect my track times, but when i put on the exhaust, i was consistantly .5+ seconds faster. i think it freed everything up. (low 16s in the Mountains of the north east....mid 15s w/ the NHRA conversion)