Make this short, I an getting boost controller to raise my boost to 14psi or 15psi. I know that I need an boost gauge. I go to mountain alot. usually my engine rev over 5500 rpm in the monuntain, so I am wondering do I need other gauge( such like oil/water temperture gauge)? other Question is my engine is JDM 2gen(almost stock expect intake),Is there any problem if I raise my boost to 15psi? Thanks.