Well, I flashed back to single map, Stg2/93oct and my CEL still doesn't light up at all. Normally, the CEL lights when the ignition is switched on and and the goes out a second or 2 after the engine is started. Now it doesn't light up at all.
I'm going to send them an email, see what they say.
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My 2017 M240i: MHD, xHP, Modded OE Intake, AA GESi 400 CPSI Cat DP, Dinan Mid-pipe, M Performance LSD & Rear Diffuser, BMS Exhaust Tips, Apex EC-7 Wheels, M-Tech Front Lip, iND Painted Mirror Caps, Smoked Reflectors