Sorry if this has been asked. I couldn't find the specific answer anywhere. Anyway, I know that one of the first things to upgrade is the boost guage especially as you modify boost levels. I know the factory guage is an "estimator". Okay, so I get the guage then modify the levels...what am I told besides what psi I'm hitting? Is it simply that I will accurately know the psi my engine melted, or is there some correlation with certain psi and certain impacts on the motor? Thanks for your help and sorry if I missed the answer somewhere else.