DLZ Performance

I changed spark plugs for egular change (there was no any issue), I adjusted Gap to 0.022inch before fitting. I ordered plugs from BMW Dealer and they sent Champion spark plugs with BMW badge. Bmw uses Champion and NGK for B58s.
But after a week I smell unburnt fuel in cabin, I have created a datalog and I have seen timing corrections in all cylinders. I removed spark plugs and bingo! Champions were not "champion" today I have got NGK 96206(for Gen2) and no timing correction in logs. If you drive tuned B58, do not use Champion spark plugs on it.

For Gen1, use NGK 92401
For Gen2, use NG 96206

Jaguar XF fuel pressure fault diagnosis