2003 piranha eforce PF, boss bolt, bossblade adjustable trigger, evil valve, bob long torpedo reg, pmi drop forward dye 14" xcel barrel, pmi pure energy 88ci 4500 tank.
Better in every way compared to stock
None for the price.
I bought this pin with my turbo valve to lower the pressure in my eforce marker. it worked great while i used it but i eventually upgraded further to an evil valve kit. for the price is it worth buying the hi-flow pin but i would also invest in a new valve to. still its a great upgrade and your only going to spend around 30 bucks total. it lowers operating pressure quite a bit with a reg.
Definetely worth it if you are thinking of upgrading your piranha