wastegate spring

hey guys i know this is noodish but… i have a greddy profec b, t3/t4 and i want to run about 18-20 psi or what spring should i be getting in my wastegate?? im not sure what it should be or how to calculate if there is a calculation. will a tiall 38mm with a 1 bar spring work for me?

sorry guys… did a search and found what i needed mods can lock and or delete this, or leave i open to make me take my punishment and flame like a man. haaha

Yeah - that spring will work. You want your wastegate spring to be the LOWEST boost you will ever run. So assuming you are okay with running a minimun of 14.5psi of boost you will be fine (and then using your profec B to boost to 18 when needed)

thanx. i just wanted to make sure there wasnt like a calc to make sure you dont overboost, i did a ll more research and found what i needed thanx again