[Louayea]

After doing a wot pull I got a misfire code and other codes taht won't go away, misfire 3,4,5. Reset my codes and still pops up even at idle.Womt go away I thought mosfits but I have a 2011 335is so msd81 I have no idea why it is misfiring .

[Saif2018]

Originally Posted by Louayea

After doing a wot pull I got a misfire code and other codes taht won't go away, misfire 3,4,5. Reset my codes and still pops up even at idle.Womt go away I thought mosfits but I have a 2011 335is so msd81 I have no idea why it is misfiring .

When were the plugs and coils changed?

I would start there first,

[mweisdorfer]

Originally Posted by Louayea

After doing a wot pull I got a misfire code and other codes taht won't go away, misfire 3,4,5. Reset my codes and still pops up even at idle.Womt go away I thought mosfits but I have a 2011 335is so msd81 I have no idea why it is misfiring .

Bank 2 is 4, 5, & 6

[Louayea]

Originally Posted by mweisdorfer

Bank 2 is 4, 5, & 6

Originally Posted by mweisdorfer

Bank 2 is 4, 5, & 6

Lol my mistake I did mean 4,5,6

[Saif2018]

Originally Posted by Louayea

Lol my mistake I did mean 4,5,6

Move plugs from 4,5,6 to 1,2,3

If misfire follows, you know its those plugs. If it doesn't then move coils from 4,5,6 to 1,2,3 to see if it follows.

Next thing to check is injectors

Throttle reset should clear the throttle code. Don't turn the car back on immediately, follow the instructions on MHD

[SixSix]

Its possible that one of your O2s is shot on that bank as they work in banks as well. But I would do what Saif mentioned and move your plugs to bank one, see if it follows and then move your coils to see if it follows. Otherwise it sounds more like a fueling issue. What index injectors do you have?

[mweisdorfer]

Originally Posted by SixSix

Its possible that one of your O2s is shot on that bank as they work in banks as well. But I would do what Saif mentioned and move your plugs to bank one, see if it follows and then move your coils to see if it follows. Otherwise it sounds more like a fueling issue. What index injectors do you have?

Yes, the rear O2 sensors monitor fuel trims. If he has turbos that are on their way out & O2 sensors in Catless downpipes, which are older than 100,000 miles, it "could" be a reason for the fuel pump code.

I'd still say to check the plugs, coils & injectors.

There a laundry list of items that "should" be done prior to going FBO and slapping a tune on an N54. If one does all of it, the chances IMO of having issues go down significantly.

The N54 and its DME can be very "fickle". There's 1000's of posts on this forum and others which prove that sentence.

[clegg]

Run a bottle of Techron in your fuel tank. My N54 had a missfires that would put my car in limp mode at half throttle. The Techron cleared that up by the time I got to the gas station to fill up.
It's worth a try.
How many miles on the car?