hey Herbz, the first "mod" I did after removing AI was pulling the snorkle, removed around 1000 miles. Made a huge difference in intake noise around 2500rpm and up. Note this was done before install of t-pipes. Don't know how much noise difference there will be with pipes currently installed like yours, but made a difference for sure on mine. Seat of the pants dyno noted a improvement in accel too, though not as dramatic a change as when the pipes and 132 jets were installed.
I say go for it, it's only a few minute mod and fully reversable as long as you don't chop it up to reinstall...:)
Cheers, Mike
