I have just had the resonator removed, I now have a headache! it is very boomy! especially at certain revs (65ish)

On a plus it has made a difference at WOT both to performance and noise!!! It sound awesome.

I will now be exploring changing the back box now to stop the drone It may add a tittle more aggression to the note!)

I thought the noise change was "apparently" barely noticeable?

NOW WHAT??