Well I adjust the boost controller to what should be 20 psi and well 1st and 2nd gear only hit 15 psi and then 3rd, 4th and 5th hit 20 and stay there. Doesn't make any sense. Yes the boost controller is hooked up correctly so that's not the issue.

 

3-5 are normally higher, that's why you are supposed to set the MBC in 3/4 gear.
my 1 and 2 are around 17/18 and the other are 21.5

 

there is a thread on this and i was curious to awhile back, but there isnt enough load in first and second to hit full boost so thats noraml