as the title guys i want more chatter as oposed to the dump vale hiss.

i have a 4x4 sapph cossie runnig stage one turbo,360 and cut backs,dark greens-31 actuator,3bar map and a stainless steel.

question is running the car at 20psi is it a must i have a dump valve or can i just get rid of it.car dosent see track but often gets opened up on private race tracks