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It allows for factory integration with the ECU for multiport fuel injection
but it's also susceptible to damage from external elements
If you do not have an M Sport rear bumper
 With a Rockwell Hardness of 100 and a conductivity rating of 2
ensuring no check engine light (CEL) issues
2014-2020 BMW 4 Series (F32 / F33 / F36) M Performance Style Carbon Fiber Rear Diffuser msport bumper It allows for factory integrationThe Kies Carbon 4 Series M Performance style carbon fiber rear diffuser offers incredible styling, quality engineering manufacturing, at wallet friendly prices. The M Performance package is one of the most highly sought after aero aesthetic upgrades, because the upgrades make such a dramatic impact to the exterior appearance of your ride! Our Kies Carbon M Performance style upgrades serve the sole purpose of attaining that factory look without paying
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