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boost gauge reading wrong?

4K views 18 replies 5 participants last post by  znn1337 
#1 · (Edited)
I just installe a autometer boost/vac gauge to my 02 wrx and it should ony be boostig stock but it shows 17.5-19.5 I tapped the vacuum line into the by pass valve vacuum line. does anyone know how to fix this
 
#9 ·
from factory max boost is 13.5, they tuned for fuel consumption and all that stuff we hate. thats y max boost only come on in high gears, more load is possibly the reason, who knows.
 
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