Yamaha 1300 Tourer - Yamaha 1300 Tourer Fansite

My bike came with cobra pipes,I'm thinking of going to stock pipes .Just bought a new take off set from e bay..those of you that have changed your pipes ,was it a simple task or hard ,it looks kind of cut and dry.a few bolts and new gaskets of course..The reason for it I wanted to see the difference in the bikes performance between the two set ups..I will even go back to stock airfilter..I like the pipes that are on it but i just want to see the change for my self...