Cadwell park i did a 2 day track day last Sept with my R77 fitted and no baffle and it passed 104db on the Sunday and 102db on the Monday. So with the baffle in place it should be under 100db. Saying that you will not get onto my local track Castle combe as they test different to other tracks. o.75mtr away at 3/4 revs. Not that standard 5-6K at 1mtr. I've not done a trackday with less than 100db yet. Anglesey, Pembrey and Donny noisy TD had no static test present. Silverstone and cadwell both did and not a issue without a baffle in
you should have no problems with 105db. they may or may not do a static test. I would not fit the baffle unless you need to