[S4Survivor]

You have to unbolt risers then pickup and twist to break seal on flange to hose from being clamped on  - u may have to wrestle some then they will come off - the outboard sides are also a pain to reach. You can also use a  1/2" caulking trowel to slide into hose end - wiggle and spray some CRC or WD into hose then twist, or you can do what the marina does and cut the hose off and replace with new but that costs a few bucks for 4" exhaust hose - Pain in the ass I did mine last year make sure u get new gaskets and plates - Have Fun