ok heres a few FACTS about chatter !!!!!, alexzvhcabrio is the guy to speak to as hes kind of studied it on his car

a t34 chatters BUT its a lot lower pitch, more like a horses neigh than pigeons under the bonnet

a smaller turb increases the pitch of the chatter and also if ya fit a turbo heat shield that also increases the pitch of the chatter

max's car ( stage 3 t3 hybrid saph cossie) chatters alot higher pitch than mine ( same spec but t34 and running 26.5psi)

i HATED the chatter low pitch neigh , i fitted a heat sheild to my cossie just before central day and now it chatters higher pitch

the smaller the turbo with the same boost the higher the sound when it stalls

this is all based on my experience and also i modded my mates filter pipe to increase his chatter and it worked

so a t34 car with a norma K&N will be high pitch to chatter than my car too