[mara_n54]

Hi, my 335i has a misfire on the 5th cylinder when I press the accelerator pedal quickly to 50-90%. When I accelerate slowly the car runs fine. Or when I put the kickdown the car runs perfectly normal too.

RPMs at idle are steady.

I have read the following error codes through INPA:
0x2AAF (Fuel pump plausibility) and 0x29D1 (Misfire on cylinder #5)

The car has a stage 1+ tune.

Can you please advise me what the problem is?

[TiAgAu]

Originally Posted by mara_n54

Hi, my 335i has a misfire on the 5th cylinder when I press the accelerator pedal quickly to 50-90%. When I accelerate slowly the car runs fine. Or when I put the kickdown the car runs perfectly normal too.

RPMs at idle are steady.

I have read the following error codes through INPA:
0x2AAF (Fuel pump plausibility) and 0x29D1 (Misfire on cylinder #5)

The car has a stage 1+ tune.

Can you please advise me what the problem is?

Any logs available?

1. Check plugs and gap (depending on what plug is installed)
2. Swap coils around and see if it changes cylinders
3. Unlikely, but next thing would be injectors.