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Hey guys, how is it going?
Could you please spare a little time and check my ECU file? Honestly, I'm out of ideas and don't know where else to look for the issue. Let me explain quickly.
Car: BMW F10 (2015) 528i with the N20B20 engine. It has Stage 1, Pop & Bangs, and a cold thermostat mod.
The story: After driving for a long time, I decided to take a datalog just to check how the engine is doing. And what do I see when I open the log? Especially under acceleration/load, the roughness correction on Cylinder 2 shoots right up to ±5.00! It's driving me crazy.
I've already replaced and checked almost everything hardware-related:
Since all hardware checks are out of the way, my suspicion falls entirely on the tune file. Could there be something wrong in the map? For example, per-cylinder ignition timing tables, torque monitoring, pop & bang timing retard tables, or injector scaling/duration maps?
I’ve attached the files here:
1. Tuned file: STAGE 1+POPS+CT_000...
2. Original read file: TC1797_MEVD1724-20...
To the tuners and brothers who know Bosch MEVD17.2.4 maps well—if you have some free time, could you take a look and see if there’s a bug or a bad parameter in this file messing with Cylinder 2?
Appreciate any help or advice in advance, cheers!
Could you please spare a little time and check my ECU file? Honestly, I'm out of ideas and don't know where else to look for the issue. Let me explain quickly.
Car: BMW F10 (2015) 528i with the N20B20 engine. It has Stage 1, Pop & Bangs, and a cold thermostat mod.
The story: After driving for a long time, I decided to take a datalog just to check how the engine is doing. And what do I see when I open the log? Especially under acceleration/load, the roughness correction on Cylinder 2 shoots right up to ±5.00! It's driving me crazy.
I've already replaced and checked almost everything hardware-related:
- Spark plugs: Swapped/replaced with brand new OEM ones.
- Ignition coils: Brand new, replaced.
- Fuel injectors: Tested, and Cylinder 2's injector was also replaced/tested.
- Compression test: Done across all cylinders, values are healthy, solid, and completely balanced.
Since all hardware checks are out of the way, my suspicion falls entirely on the tune file. Could there be something wrong in the map? For example, per-cylinder ignition timing tables, torque monitoring, pop & bang timing retard tables, or injector scaling/duration maps?
I’ve attached the files here:
1. Tuned file: STAGE 1+POPS+CT_000...
2. Original read file: TC1797_MEVD1724-20...
To the tuners and brothers who know Bosch MEVD17.2.4 maps well—if you have some free time, could you take a look and see if there’s a bug or a bad parameter in this file messing with Cylinder 2?
Appreciate any help or advice in advance, cheers!
