Hi, I live in a city with high altitude 1,500mt/4920ft i have a prosport electronic gauge and it measure 15psi, I try it in 2nd, 3rd and just measure 15psi, wondering if is this normal for the hight altitude, Do I have a pressure leak? or my gauge is not accurate.
Any info will be helpful

2004 Evo RS
My mod are:
Apexi power intake
Nesei LICP
NGK spark plug cables
MR BOV

Thanks

 

my prosport gauge was never accurate
it was off by 3-4 psi easily
garbage gauges in my opinion

 

Test peak boost in 4th, or 5th.

 

check your nisei licp make sure thats on tight sounds like you have a boost leak.

 

Just make a boost leak tester and test it. costs 10.00 to make and saves you hours upon hours of time.