psi pipe is good at phazer, but if you want more bottom features as cutting up the pipe at the end and take out the sound damping, it may sound a little higher but there is little difference.
my dad has a stroke phazer. I mean drilled to a maximum limit and other gear on variotorerna. would be a standard phazer have the exchange, it would not bother. the max is drilled, flat side 36mm gasare. psi barrel, self-made variator kit. when it is best when the meter past 160 km/h. you go from 600 machines.