[kriszty]

Originally Posted by heyitsbrandon

I have to be honest in saying that I have no idea how to properly read these logs. I have spent a few hours searching around forums, and I was reluctant to find the information that I was looking for.

The car is a 2017 340i. 8HP Trans
39k miles.
MHD Super License
Brand new Champion spark plugs *stock gap*
BMS Intake
VRSF Catless DP
Exxon 93 Octane fuel. No additives used.
Transmission & Engine oil just serviced with Amsoil

I just installed all of the above mods ~200 miles ago. From what I can tell, the car runs great. My concern is that from what I am seeing in forums, I am supposedly not supposed to have more than a 3 degree timing correction on more than 3 cylinders, but from what I am able to decipher from these logs, I am having a lot of corrections, & my timing delta for knock is straying too far from 0

If this is indeed an issue, my first guess is to regap the spark plugs, or go 1 step colder, gap, and relog. Can anyone please confirm or tell me if I am being a hypochondriac?

I downstepped from stage 2 to stage 1 - 91 octane (While using 93 in tank) to see if that would be a sufficient buffer. From what I can see, didn't help.

Then out of caution, I went back to stage 0 until I can get some feedback from someone knowledgeable. I only notice one minor correction on cyl 2 now while in Stage 0

I hope these logs are sufficient.

Stage 0 Pull 1
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Stage 0 Pull 2
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Stage 1 Pull
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Stage 2 Pull 1
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Stage 2 Pull 2
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Stage 2 Pull 3
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

Stage 2 Pull 4
https://datazap.me/u/brandonwinkler/...og=0&data=5-23

you made the logs the same time ? , your car has to adopt a bit, but overall it does not look that bad. as always at stage 2 you have to add some more octane to run a better timing , the B58 loves octane !!!
( try add some ethanol , timing should improve then , around 3-4 liters , drive 30 min and log again )

greets, Patrick