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      03-10-2026, 11:03 AM   #15
335xiE90
Private First Class
United_States
45
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101
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Drives: BMW 335xi
Join Date: Jul 2022
Location: Massachusetts

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Quote:
Originally Posted by whyzee125 View Post
Try not flashing back to stock, but uninstalling MHD entirely.
Sadly that didn't work. I did however purchase upstream/front oxygen sensor. The other upstream is relatively new (10k miles). Here's to hoping that o2 sensor is the culprit.
Appreciate 0