A FMIC upgrade is one of the best modifications for the 135i, because not only does it yield an average of 25whp and 25wtq but it does so while simultaneously improving consistent performance. How you may ask? When you increase power with a tuning chip for example, you are increasing boost pressure and ultimately heat in the engine. When the ecu (tcm) detects too much heat it will actually limit the amount of power it can produce in order to avoid damage to the engine. Now back to the FMIC, which actually LOWERS heat in the engine which means that not only does it increase the power but also allows the other mods on your car to work more consistently i.e. reducing the chance your car will limit power due to high temperatures. ARM Motorsports 135i FMIC increases cooling efficiency and power on your N54 or N55 equipped 135i by using a 5" stepped core which maximizes intercooler size 20.5" x 5" x 8.25" (almost 100% BIGGER than oem!) without the need for irreversible cutting or trimming to your bumper. It retains all the oem crash bars and bumper pads as well. The 5" stepped core is constructed of a bar and plate design and will allow for consistent performance. It reduces heat-soak and minimizes the chance of your engine reducing boost and timing due to high IAT. Installation of the ARM 135i FMIC is one of the easiest installations for a 135i with an average install time of around 30min wheels up to wheels down. RESULTS IN THE BOX Gain up to 25whp/27wtq Increased Cooling Efficiency Reliable Performance Direct Fit ARM FMIC Mounting Hardware FITMENT GUIDE 2007 335i/xi Sedan/Coupe/Convt. 2008 335i/xi Sedan/Coupe/Convt. 135i Coupe/Convt. 2009 335i/xi Sedan/Coupe/Convt. 135i Coupe/Convt. 2010 335i/xi Sedan/Coupe/Convt. 135i Coupe/Convt. 2011 335i/xi/is Sedan/Coupe/Convt. 135i Coupe/Convt./ 1M 2012 335i/xi/is Coupe 135i Coupe/Convt. 2013 335i/xi/is Coupe
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