You have an integra GS-R .... which is a very nice car. Keep it that way.

Loud as possible exhausts are for Geo storms and such that put stickers on their cars for extra HP (ricers).

Don't ruin your car...
Get an Evo2, 5zigen fireball, or HKS Hi Power... all aren't extremely loud, have reasonable (most exhaust gets you is about 5 hp) power gains, and have a nice low growl to them.... they'll bring out the nice sound of your engine... not put a squeal into a megaphone which is what it sounds like you want.

Trust the people here... you don't want the "loudest exhaust". You're new to this and you'll regret it in the future. Take people's advice, most people here have been tuning for a while.