boost problem

[rajvr497]

54666hi guys i installed an aem tru boost controller its working but at 16 psi in third gear its dropping till around 13 psi its not keeping a constant 16psi on 1st and 2nd gear it will not reach 16psi it wll range around 12-13psi on the other hand on third gear it reach 16psi but will drop to around 13psi but on 4th and 5th it will range around 15-16psi anyone having dis problem??????

[jjayokocha]

normaly cars have restricted or lower boost in 1st & 2nd which would explain that, but as for reaching 16 then not holding it sounds like a leak to me

[SEAN-NZ]

if its a leak then why does it have full boost in 4th and 5th?

[disco-ian]

My brother had very similar issues on his s14a and it turned out to be slack on his actuator arm.


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[wintertidenz]

You shouldn't really be pushing our small turbos over 14psi anyway. They start to surge at 16psi IIRC.