i have an 06 sti stage 2 and protuned. mods: tbe, aem cai, fuel pump, hallman mbc, and accessport v2.



I went to stock and am about to put my parts back on, but realized i accidently turned/touched the mbc which adjusted it when taking it off! How do i chek to see if i am at the right psi? (im suppose to be at 18psi.)



Please help and answer ASAP i really don't want to be hurting my car by over boosting or underboosting on my tuned map. thank you.