can i pick your brains or advice please.
turbo went on the zafira GSI i changed to the VXR turbo and courtney set the actuator up on it to fit GSI spec. trouble being the bolts fell off the actuator after 3 days and i lost all boost i spoke to them and they say i can adjust to 3/4 threads showing below the last nut on the actuator.
i also changed to the courtney air filter and vectra pipe and derestricted box.
now i'm getting which sounds like a party blower high pitch spoll up of the turbo . at first its louder as if turbo catching up then goes quiter. is this because i have actuator too high or is it the air filter?
another way to explain if i was in 4th gear at 40 then floored it its loud untill i get up to speed. if i started in first then go through the gears quick its less i surpose because the turbo is spinning fast already?
any ideas please.
i was thinking just to thread down on actuator as i left heat shield off or go back to old stanard air filter? and then drive it.????????