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      06-01-2019, 12:06 AM   #4
BMWDriverX
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Drives: F90 M5
Join Date: Jul 2017
Location: SoCal

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If you're buying it from RK there should be instructions but it's like installing any other CAI. You have to take apart the stock intake boxes, MAF sensors, remove the ducts going to the front grills, remove the grills. I use some grease on the silicon elbows and fold them in half to squeeze it through the ducting paths into the engine bay after installing the filters onto them, then you slide the carbon tubes into the silicone elbows. I use a little grease on those as well so you can pull them apart down the road. Also do not over tighten the MAF screws,just lightly hand tighten and you can use some blue loctite.
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