[MARCELLODIBZ]

Any n55 gurus know any more information on what could be causing the issues in my car, I included three pulls I did below.

2016 M235i RWD 70k miles, new valve cover done recently

Pulls
#1-https://www.bootmod3.net/log?id=61df7d9dc090c63459452a83
#2-https://www.bootmod3.net/log?id=61df7d09d10b4310ef4572c0
#3-https://www.bootmod3.net/log?id=61df7cbcae729b63bcb576c0

Mod List
-Charge Pipe
-Boost Pipe
-FMIC
-Catless Downpipe
-Intake

Running on bm3 stage 2 AGG.
-Stutters every now and then at idle sometimes more than others
-Backfires during WOT between 5-6k rpm especially in lower gears
- stutter is still evident while holding a gear cruising
-excessive on and off vibrations especially in higher gears even with just 25% throttle

[Dom147]

Your ignition timing does seem pretty off.
When was the last time you had your ignition coils and spark plugs changed?
and how long have you been running bm3?

[bcwalks2]

I don’t know how to interpret those results or know what the timing should be off the top of my head. Based on what you are saying and the known weak point of the coils on the N55. I would look at coils and plugs. Have you put lower temp plugs in? Running a stage 2 on OEM plugs may cause what you are referring to. I think there is a thread here talking about lower temp plugs somewhere.

EDIT: This thread might give you some ideas https://www.2addicts.com/forums/show...Low+temp+plugs

[MARCELLODIBZ]

Installed new NGK 95706 and on the stage 2 AGG bm3 tune the idle is around where it should be RPM wise, just doesn't sound smooth, almost like it's cammed.

On the Stage 2 AGG, there are no check engine lights but still the issue is the backfiring high in the revs on WOT.

I guess the next thing I am gonna do is try to get new coils eventually but I'm not sure, getting tired of playing whack a mole with Beamer issues, is it the coils or is it fuel pump related who knows.

DME CODES- read after spark plug installation
- 150C11 ignition, cylinder 1: focal length fl outside tolerance
- 1BC112 zero gear sensor, electric: Short circuit to positive

[MARCELLODIBZ]

Originally Posted by Dom147

Your ignition timing does seem pretty off.
When was the last time you had your ignition coils and spark plugs changed?
and how long have you been running bm3?

Bm3 been installed for about a month

[MARCELLODIBZ]

Coils were the culprit, car pulls hard. Looking to get some meaty tires and new rims tho