y is my boost varying soo much
in 3rd gear one day it will stay at 21psi, other times it will spike to 20 and go down to like 15
in 1st gear it will spike too like 17 and taper to 15 but other days it will go to 21 and taper too 15
what is the deal my mods are in my sign let me know what u thing

 

it depends how much load u putting down to the engine...
for example~~~3rd gear pull at 20mph puts down more steady & higher boost than at 50mph pull in 3rd same gear...
also depends on weather...

 

i doo the same pulls but i still get diff readings

 

no one elese has ne ideas