Datalog BMW 135i Cold Start Rough Idle (fine when JB4/MHD removed)

Phillstine

Lurker
Dec 6, 2021
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Yeah definitely no issues when stock, I'd like to think I'm not a complete noob so went about changing the Ignition and fuelling components. Happy to try INPA Rough Running and see if that yields anything, one can hope!

It is a rather baffling issue, frustrating too as the car runs and pulls as it should after it's my 4th N54 so I have a good enough idea when they're not running quite right.