No boost leaks but losing boost????

[LaN-]

alright here is the issue i'm goin to run 15 psi on the 14b it gets up to 15 psi then longer it stays it just goes down to like 12psi wtf i did a boost leak test and it held 18 psi for about 2 mins. I just replaced by injector O - rings TB shaft seals TB gaskets to fix all my boost leaks but its still losing boost

any ideas

 

[oldman]

1. Check for exhaust leaks before turbo. If no leaks found, go to 2.

2. Do a all out boost test by leaving the actuator nipple open, make sure to feather the throttle and keep boost at no more than 16psi. If problem resolved, you have issues with mbc/bcs/actuator. If problem persists, go to 3.

3. Check turbo for shaftplay, free spin and evidence of leakage.

Good luck.

 

[LaN-]

i hooked up my boost controller to the BOV vacum line instead of the LICP and played around with the setting on the MBC and it seems to be doin alot better it spikes to about 16 then drops to 15

after 2 months everything finally works w00000000000000000000000t (sry i'm just really happy)