So i broke a 7 pound sping in my tial.. I installed a big red spring and the car is boosting 14 to 15 pounds wtf... My boost guage reads 1.5 pound high with the car off is this why its reading 15 pounds..

 

well the big red spring is a 0.8 bar spring = 11.76 PSI

11.76 + 1.5 = 13.26

if you have the slightest boost creep then I can see your gauge reading 15 PSI as possiablity, how is your gauge getting it's reading? from the intake manifold?

 

its getting it threw a vaccum box that the brake booster is hooked to

 

boost gauge getting vacuum from the same source?