[ovnel]

This noise happened after I did a pull and immediately I had ZERO torque or boost pressure. I had the turbos replaced by the dealership back in December. After about 10 miles of this noise, it had stopped making any sort of whistle or whine so I am assuming it was turbos. When that stopped, my engine began misfiring and smoking BAD out of the passenger-side exhaust. I took it to BMW and they said that my fuel injectors were leaky. As I was not convinced of this, I took some working fuel injectors from another n54 and put new seals and decouplers and new spark plugs. My idle was once again perfect yet I was still smoking out the exhaust. I towed my vehicle back to BMW and they rev'd it and it started misfiring again and burnt through my spark plugs and they once again claimed it was fuel injectors. If I can confirm that is somehow the issue despite those working well on another vehicle, I am prepared to buy Index 12s. However, I genuinely think this whining sound has to do with it and is unrelated to fuel injectors.

Also, my oil consumption is extremely excessive(think 1 quart in under 10 miles).

Here is two vids showing it:

https://drive.google.com/file/d/1Y_f...w?usp=drivesdk

https://drive.google.com/file/d/1jnt...w?usp=drivesdk

[relative4]

Can't access the docs.

[ovnel]

Originally Posted by relative4

Can't access the docs.

I updated it thanks links should work now

[relative4]

Yep. Get a diagnosis from a shop not invested in pretending the turbos are OK, then make the dealership reimburse you for that diagnosis when replacing the turbos.

[trb1]

No boost at all? Sounds like you've got a leak, not an issue directly with the turbos themselves causing the no boost scenario. although excessive oil consumption and smoke is probably from the seals.