i'm wonderin if i have to change the spring on my WG and bov...i was runnin 10psi before..i have a tial 38mm WG and a greddy type-rs bov...i'm usin the greddy e-01 boost controller....i'm lookin to pull like 18psi+.....which spring size should i get if i do need to change...thx for the help..i'm a lazy bastard..lol

 

you can run a mbc to get that
just buy a 1bar spring and call it a day