S55 wastegate rattle - N54Tech.com

AC Tuning · **S55 wastegate rattle -** 09-19-2020, 09:15 AM

Has anyone experienced wastegate rattle on their S55?

We fitted VRSF down ***** to my M4 comp yesterday and can definitely hear wastegate rattle.

Curious to see if anyone has experienced the same.

The turbos also have a reasonable amount of play, quite bad considering the car has on done 7000 miles.

luchocamp · 10:38 AM

Very strange... I had several car with over 60k miles no shaft play no wg rattle...
Every unit has a different story.

AC Tuning · 09-19-2020, 10:14 AM

Its not the end of the world as im going to fit hybrids anyway just abit disappointing to see on a late 2018 car with such low mileage.

AC Tuning · 10-10-2020, 07:55 AM

Just an update, i had a look under the car and on the back turbo there is a bar that links the actuator to the wastegate in the exhaust housing. If you hold the bar and give it a wiggle it makes the same sound i hear.

When i swap the turbos in a couple of weeks i will see if i can find a fix