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Wbw2112 Wbw2112 is offline
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Car: 2016 340i
Default JB4 Map 5 bad shift lag - 09-13-2020, 12:20 PM

Hello.

New to JB4 and BMW tuning generally. Glad to begin playing.

I have horrible shift lag on map 5. The car feels like it is stumbling over itself for what seems like .5-.75 seconds. Attached is a map 5 pull 2nd gear through 4th. DSC off.

Running all stock 2016 340i B58. New plugs gapped at .030 new ignition coils.

Firmware B58_17_T5

I have searched and found nothing quite similar and no solutions.

I did get a code on cyl 4 "Burning time out of tolerance." Replaced coil. No code since. Issue not resolved. Attached is post ignition coil replacement.

Side note: Poor power on map 1. I have .csv and graph of map 1 if requested. Map 1 has zero shift lag.

Could you all please advise?

Appreciated!
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File Type: csv P58_M1_R1_200911_163352.csv (9.0 KB, 12 views)
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Wbw2112 Wbw2112 is offline
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Car: 2016 340i
Default 09-13-2020, 04:10 PM

Potential rookie mistake.

Firmware v15+

"Map5: Absolute target map with peak of 22psi target (E30+ fuel) suggested for higher boost models like G chassis, Supra, and Z4. EWG required for proper control."

EWG arrives this week.

Please advise.

Thanks.
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