[ESmotorsports]

Hello! I want to start off prefacing, I am an N54 newbie. So I apologize for any stupid questions.
But I recently bought a 335i n54 and I did the classic intakes, CP, FMIC, stage 1+ MHD. 91 OCT
I also installed new Endor coils and 1 step colder plugs.

Today I installed catless Downpipes and flashed MHD 2+ 91 OCT
Car sounds great and runs great.
The issue i am having is, at WOT around 5-6k the revs stutter ever so slightly and MHD is showing a “super knock” shadow code.
I cleared the code and tested multiple times. And the super knock code moves seemingly randomly between cylinders. First time it was cyl 5. Then cyl 6 and cyl 2.
I flashed back to Stage 1+ it’s having the same issue. Superknock shadow code for cyl 1 this time.

If I drive the car sporty, but dont go WOT to 6.5k, the car doesnt throw the Superknock code. Even when revving the car out to 6.5k at 70% throttle does not cause the code. It’s only happening WOT and high rpms.

The car drives amazing, and I dont hear or feel any misfiring. Just the minor stutter in the revs and the codes so I just dont understand what’s going on

[lowrydr310]

Flash "Stage 0" (no tune but MHD stays installed, easy and fast) then do a proper log and post the file here. We need to see your fuel pressure.

It could also be injectors, or maybe something simple as carbon build up.