help light engine on on my m5

[M5 ita]

Hello everyone I recently bought a bmw m5 f10 of 2013 and for some time and remained original but for some days I decided to remap the engine control unit with a stage2 and replaced the catalysts with the downpipe + sport air filters + exhaust terminals, as soon as I tried everything ok, this morning I go for a ride in the road with a little gas on the accelerator about 120 km and it seems that a cylinder does not go and I turn on the engine warning light, turn off the car and turn it on but the problem remains, so I decide to go home and after a while the engine light turns off and the engine returns to work ok, I try to give full power pushing the accelerator and the car works ok, what could have happened? I made a motor diagnosis and I have these errors dtc 168201 120908 120408 E58501 8020DB

[M5 ita]

I attach dtc errors in diagnosis

[wheelpro]

I dont know this language
But it looks like misfire cylinder 3
Cause sensor 3 bla bla bla
What ever its misfire
May be tank looks empty or bad fueling

[M5 ita]

Originally Posted by wheelpro

I dont know this language
But it looks like misfire cylinder 3
Cause sensor 3 bla bla bla
What ever its misfire
May be tank looks empty or bad fueling

Thanks for the answer is sorry my way to write but I use a translator

[M5 ita]

when I had the problem you were almost full of gasoline, I did the maintenance but I have not replaced the candles since I bought my car, maybe I should do it and make the gap as many say a0.020?

[M5 ita]

Originally Posted by wheelpro

I dont know this language
But it looks like misfire cylinder 3
Cause sensor 3 bla bla bla
What ever its misfire
May be tank looks empty or bad fueling

120408 boost pressure regulation: deactivation as a consequent reaction 120908 boost pressure regulation 2: deactivation as a consequent reaction
168201 knock sensor 3: motor noise signal exceeds the limit values ​​
E58501 message (drive absent 0x1EE absent, receiver frm, transmitter SZL
8020DB excitation line to the IBS intelligent battery sensor, short circuit to ground or cable break
translated into Italian

[wheelpro]

Originally Posted by M5 ita

120408 boost pressure regulation: deactivation as a consequent reaction 120908 boost pressure regulation 2: deactivation as a consequent reaction
168201 knock sensor 3: motor noise signal exceeds the limit values ​​
E58501 message (drive absent 0x1EE absent, receiver frm, transmitter SZL
8020DB excitation line to the IBS intelligent battery sensor, short circuit to ground or cable break
translated into Italian

For your faults
Mean you have bad fueling i think or empty tank
Or may be both
For ibs
Check black wiring on ground battery
You will see small unit on it check it
May be someone changed battery and forgot plug in

[M5 ita]

Originally Posted by wheelpro

For your faults
Mean you have bad fueling i think or empty tank
Or may be both
For ibs
Check black wiring on ground battery
You will see small unit on it check it
May be someone changed battery and forgot plug in

Thanks friend for the answer I was worried that it could be an injector or spark plug ruined, I still have the original no gap 0.20 and soon I would like to put the ngk iridium, I thought it could be a bad remapping of stage2, the car is strong but I would like an opinion, on the mod file to feel comfortable, who can help me

[KSA.m6]

it could be a number of reasons, spark plugs, coils, mass air flow sensors, oxygen sensors.
change the spark plug from cylinder 3 with 2. check if the problem moves to #2 then the spark is faulty.
if the same problem remains, do the same for coil #3 to #2, check if the problem moves to #2 then the coil is faulty.
third thing to do is to check or change MAF.
forth is the oxygen sensor check or change.

[M5 ita]

Originally Posted by KSA.m6

it could be a number of reasons, spark plugs, coils, mass air flow sensors, oxygen sensors.
change the spark plug from cylinder 3 with 2. check if the problem moves to #2 then the spark is faulty.
if the same problem remains, do the same for coil #3 to #2, check if the problem moves to #2 then the coil is faulty.
third thing to do is to check or change MAF.
forth is the oxygen sensor check or change.

The car is now fine and regular and has not done it anymore, from the original map it never did it only after remapping stag2 on road with accelerator pedal pressed very little in 7 gear at about 120km hours started to lose strokes from a cylinder