Tial BOV 9psi or 11psi spring?
I have a 01 WS6 installing STS kit with 60-1 and a TRT FMIC kit. TRT sent me a 11psi BOV and in the STS kit I got a 9psi BOV. I know 2 are not needed which one should I use for my kit and FMIC. Goal is to boost and tune around 7 to 8 psi max.




