I am having an issue on my car where I have the gate directly connected to the turbo, and sometimes the car overboosts the 15lb spring. Sometimes it will come up to 20-21psi.

Could a boost leak cause this? I have my suspicions the car has a large boost leak, from how it feels under boost....

 

i have the same prob on my tial 38mm, dont know why though... i had a 15lb spring and it would never open below 20lbs

 

I'm on a buschur cast kit with 44mm

 

sounds like boost creep. is it an external or internal WG? Also, it could be pressure difference depending on where your boost source and PSI monitoring source are in the system.

 

is it only doing it in the cold? or year round?

 

you say sometimes, does that mean the car goes to the 15psi gate pressure correctly some of the time? How sure are you that it has a 15psi spring in it?

 

it is really cold right now... i havent ran the car yet in the warmer weather with this setup.

the tial 44mm has the 15lb spring

 

what size ID line are you running from the turbo to the gate?