FreeWiFi

Hello guys. I recently bought a 2010 535i M Sport.

I'm not new at turning a wrench!

So here are my questions:

1. So I spot it 1 turbo already even thought it doesn't say it on the valve cover that it is turbo, did some research and found out that most of 2010 535i are twin turbo. Is the other one underneath?

2. Can I add a BOV?

3.I got engine light on took it to auto-zone I forgot the code I'll edit post once i get it again.
But it came back as Bank 2 lean So maybe o2 sensor?

4.I head a winding noise around the front last night, this morning poped the hood and started to look, ii see that the serpentine belt is cracking towards the inside meaning towards the engine of the car while me standing in front of the car, i do some sort of leak maybe oil will get back with a picture

5.Can i stream Bluetooth music maybe an update to firmware.

Thanks in advance

frchdragon

Congratulation, I love the 535i, and it is a good thing that you are mechanically inclined because the N54 engine will need a lot of your skills ... or money.

The N54 has issues with turbos, injectors, High pressure fuel pump, carbon deposit...
The positive thing is that it can be tuned to free up lot of HP.
Now, for all the info about the engine, look at:
http://www.n54tech.com or just google N54 and whatever problem you have.
1- you have two turbos, tons of pictures of N54 on the web
2- Yes, a lot of E90 owners do it because they like the Pssssht noise.
3- Get yourself a good BMW scanner or a laptop and the proper BMW software (ISTA, INPA...), you will need it.
4- Hard to know but start with a complete fluid change and replace all filters and start the N54 maintenance routine.
5- Depends if you have a CCC or CIC (https://www.sfbmwcoding.com/how-to-t...ic-navigation/) I think it started sometime in 2009.

FreeWiFi

5- Depends if you have a CCC or CIC (https://www.sfbmwcoding.com/how-to-t...ic-navigation/) I think it started sometime in 2009.[/QUOTE]


So mine looks like this