Originally Posted by costina
do you run a power boost valve? if you do its that, or your standard pressure reg.
have heard a similar noise and it was that
check you fuel pressure as this maybe the cause of pinking etc
Hope this helps
on mfi's its not possible to mount a pbv...
if your car pinks (and if everthing else is ok) youll have to set up the fueling... most probably poor mixture...
good luck