i'm currently can-less and it'll be a couple weeks before i get my stainless-gp canister. i'm running 2-1 collectors and was wondering if it's a bad idea on my '05 S4R. i still have the stock mids with the udder.
You should be fine.
The neighbors may not like you.
i don't think they'll be happy afterwards either. the gp cans are supposed to be stupid loud, albeit a better sounding, deeper loud.
at least you wont have to worry about floating a valve.. thank you desmo! ;D