Hey,
My 2014 EWG N55 F30 335i XDrive is making this weird noise. The noise would only happen right after the car goes thru it's cold start process after noting being driven for a long period of time when the car is completely cold, then when the car reaches it's normal operating temperature the noise goes away completely. I have no check engine light, no codes, car drives perfectly fine, only that noise right after the loud cold start is finished. I included a dropbox link of a video below so you guys could hear the sound. Have anyone of you guys experienced this issue before, or even have an idea what could it be by watching the video?
When you click the dropbox link it would direct you to the video. You don't need to download the dropbox app just choose the option "or continue to website" then press play.
https://www.dropbox.com/s/x4f0ecgz49...%20PM.mp4?dl=0
My mods are:
BM3 stage 2+ E30 OTS Flex fuel Multi Map/ with map switching/ anti-lag.
XHP Stage 3 Transmission Flash.
Cat-less down Pipe
Front Mount intercooler
Charge Pipe
Dorch Stage 2 HPFP
Upgraded stage 2.5 LPFP
NKG Plugs gapped at .021
AWE Touring Exhaust with stock mid pipe & resonator