[Karan335i]

Hey,

Got a 2011 335i n55 xDrive. I've been getting a weird rough idle for the past year now. Its on almost every single cold start and here and there on warm starts. The car starts fine, Idles for 2-4 seconds regularly and then the RPS shoot up, come down, shoot up and eventually maintain themselves after about 5-6 seconds of doing that. I didn't end up doing anything about it until about 8 months later when my car started taking longer than usual to crank and eventually just shut off on me, It would crank but not start

I was certain this would be my HPFP so I changed it with a brand new OEM one and it started up just fine however I still had these rough idles on cold starts. Its been a few months since I changed it now and still starts up just fine but has these rough idles.

Im tired of it and want to deal with it now. I have no clue what it could be. Hoping anyone can shed some light on this,

Any input is appreciated,

Thanks in advance


Mods-
VRSF Catless DP
BMS Intake
VRSF Chargepipe
VRSF Intercooler
MHD Stage 0 Right now was tuned in the past