If she's already tuned for aftermarket exhaust via the Triumph tune, thats a power loss right there ...
it is tuned by triumph for the jardine exhaust
I think I will just as you say liven up the beast ,
remove secondaries, plunk down a single K&N in the can under the saddle, and watch the plugs for lean running .I already connected the GIPRO , did not see much difference in the running maybe it will get better once the secondaries are removed.I am not going triple and tuneboy , too much risk of screwing up beside if I have to sell better to KISS