[KhelMP2013]

Trying to clear things up (are my following thoughts true?):

- default position (ie engine off) the wastegate is fully open

- when turned on, vacuum either leaves it open or seals it, depending on BMW software version, or your JB4 settings

- using JB4 settings of 4.5RPM on menu 10, makes the actuator attempt to seal more than normal under low rpm and throttle positions, and can help to eliminate rattle

- If I adjust the rod, by turning the rod in the OPPOSITE direction of when i loosen the 10mm nut, it will tighten the rod (shorten it), aiding the actuator to seal the wastegate, thus lessening or eliminating the rattle/flutter

- If I turn it a few (3 to 4) rotations, and there is NO CHANGE at all in the rattle/flutter behavior (very clear upon de-accel and coasting), what is the reason? Are the actuators so broken that they still can not create a seal?


Just let me know if the above points are true and make sense. I have turned the rod a few times now over consecutive days, but it does not seem to have any change on the car's behavior or rattling noise.

I am tempted to continue the adjustments until I get overboost or other obvious issues, in an attempt to fix this awful noise. I have muffler delete and catless downpipes, so the sounds are VERY audible. Over 80k miles and looking to avoid a solution other than purchase new turbos.

[Opo]

Are you only adjusting one of the turbos?
To adjust the rods properly you need to have a vacuum pump with a gauge and the down pipes must be off.
There are threads on these forums which explain how to do it properly

[e92_boost]

Subbing for input as mine rattle at idle