[BMW335iSport]

Current symptoms;

• Rough start up on cold, sounds like the engine is struggling, it's not roaring to life instantly.
  
• Today it didn't start up on first attempt, second attempt it worked.
  
• I'm getting surging on light throttle only, WOT feels perfect and the logs look good whilst WOT.

State of the car;

• Spark plugs roughly a year old.
  
• Coils are a couple months old.
  
• Turbos less than a year old.
  
• No codes according to JB4 Connect.
  
• Hitting decent boost according to JB4.

Any ideas that I can try before spending silly money on injectors?

[Dann]

Try the fuel pressure sensors and possibly HPFP.

Have you had it walnut blasted?

[335iZoom]

Sounds like the hpfp