i have a t3/t4 turbo and i have a manual boost controller installed it was working fine and i was boosting about 5 psi till i get my fuel system upgraded but then i had problems with my oil line leaking a bit and i didnt drive it until i installed a new oil line and after i installed the oil line its boosting around 11 psi at 6k rpms and hits fuel cut when the manual boost controller is turned all the way down i know it has to be running lean as hell does ne1 kno how to fix this problem plz.

wow, I am confused.

You installed a new oil feed line and now your boost went from 5 to 11psi magically?

Did you crack/split a vacuum line to the MBC or something?

What are you using to prevent fuel cut as well?

start by removing the MBC and running a new line from the turbo to the wastegate and see if that helps the problem

my turbo didnt have a fitting to run a line from it for some reason

How do you have your mbc routed??? Pictures??? Make sure your vac line isn’t resting on your manifold.