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So, since my plan is to use the CTS Turbo 200 cell 'sport' cat downpipe with the MHD stage 2, 93 octane map, I emailed MHD.
My questions and their answers are below:
Q: Would that "catless" setting in the flash tune suppress the CEL?
A: that setting will suppress catalytic convertor effectiveness codes
Q: Would the AFR be correctly maintained?
A: AFR will be maintained correctly
Q: Would that setting cause any problems with, or damage to, the 200 cell sport cat in the CTS Turbo downpipe?
A: no it will not, it only affects codes
I hope this helps anyone considering using a 200 cell 'sport' cat and an MHD flash tune.
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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
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