right now I have a catless dp and an invidia G200... Yesterday I took my silencer off and crap its loud. I was thinking about getting an uppipe as well but how much louder would it be ? maybe i should trade my g200 with an evo2 or something.. .does anyone have an evo2 ?
Not much. You will here the turbo Spool a little bit more, but thats about it. Exhaust note may be a tad louder, but not a drastic difference.
^^^ What he said, and to add, the uppipe isn't that large of a diameter. Its only large diameter piping for the most part that makes it loud.
I have a catless dp and catless CBE, and when I installed my up pipe I definately noticed a difference. It wasn't as drastic as going from a stock exhaust to a CBE, but it was noticeably louder...louder than I was expecting, but that shouldn't keep you from doing the mod.