VRSF 5″ Performance HD & 7.5″ Competition HD Intercooler Upgrade Kit for your 2007 – 2012 BMW 135i, 335i & X1 N54 & N55 Powered BMW Replace your overheated factory intercooler with the VRSF 5″ Performance HD & 7.5″ Competition HD Intercooler to get the most out of your N54 or N55. These intercoolers were designed to be one of the best performing, direct bolt on intercoolers available for your BMW with special attention to quality and performance while maintaining a reasonable price. These intercoolers allow for higher HP gains, mainly due to their ability to keep intake temps down while preventing heat soak which is a common problem with the factory intercooler. This results in a more power and increased reliability with reduced chances of pre-detonation & knock. Intercooler Core The most important component of any intercooler is the core. The core cools the charged air from the turbo before it enters the engine and the OEM BMW tube and fin intercooler is designed to support low boost levels and air flow. Once boost levels and air flow are increased, the OEM unit is easily overwhelmed and can not keep up with the cooling demands of a tune running more than OEM boost levels. This results in heat soak which will result in a power loss and a higher potential for pre-detonation in the upper RPM range. We remedy this problem with our custom bar and plate cores which utilizes a staggered and offset high density internal and external fin pack. Our cores have been carefully tuned to provide the the best intake temperature reduction while maintaining minimal pressure drop. Our bar & plate core is also much more durable than the OEM tube and fin core, with a better ability to withstand rocks and other debris. The VRSF 5″ Performance HD is the best option available for stock turbo N54 and N55’s on the market. The 5″ features a much denser fin pack both internally and externally than comparable options. The stock BMW intercooler rises about 32 degrees during a 3rd gear pull whereas it’s not uncommon to see intake temperatures stay even at the end of a 3rd gear pull with the VRSF 5″ Performance due to the larger overall surface area. The VRSF 7.5″ Competition HD FMIC utilizes the largest core of any 7″ intercooler available and is the best performing 7″ intercooler in it’s class. More importantly, the proprietary VRSF core offers a much denser, high destiny fin pack both internally and externally which translates to better heat absorption internally as well as heat dissipation externally without compromising airflow. Again, the OEM intercooler rises 32 degrees during a 3rd gear pull whereas it’s not uncommon to see intake temperatures drop at the end of a multiple gear pull due to the Competition HDs larger overall surface area. Installation The 7.5″ Competition HD intercooler kit includes everything you’ll need to replace your OEM intercooler with our upgraded kit. Due to the larger over all size of the size of the 7.5″ intercooler, the black plastic shroud does need to be trimmed. Also note that the bumper cover does not require trimming or removal for installation. The 5″ intercooler kit also includes everything necessary to replace your OEM FMIC (front mount intercooler) with our upgraded kit. This is a bolt on intercooler which means it doesn’t require permanent modification in order to be installed. Also note that removal of the bumper is not required for installation. Each VRSF intercooler is hand finished and pressure tested to ensure a high quality, leak free experience. Our intercoolers fit both Left Hand Drive (LHD) & Right Hand Drive (RHD) Models as well as all XI models. Every VRSF product includes our lifetime warranty & our “No Hassle” satisfaction guarantee which includes fitment & defects. Features High density, bar and plate core 5″ Performance HD features the highest density fin pack in it’s class 7.5″ Competition HD features the largest 7″ core in it’s class CFD engineered cast aluminum end tanks Lower charge pipe, couplers, clamps and mounting hardware included. Lifetime VRSF Warranty Fits the following BMWs 2007 – 2013 E90/E91/E92/E93 BMW 335i & 335xi2011 – 2013 E92 BMW 335is2008 – 2013 E82 BMW 135i2012 – 2015 E84 BMW X1 35i