For years you've been asking GrimmSpeed for intakes, and for years they've been silently working to create a solution that sets itself apart from the rest. They examined and tested current offerings, and identified their shortcomings. They formed theories, and over months of testing designs they proved them. Combined with their advanced research and development program, they fully utilized their engineering resources to design and manufacture what they believe is the most comprehensive intake solution available for the 2008-2014 Subaru WRX and STI and the 2009-2013 Forester XT.
Based on their testing and research, design requirements for this intake became simple. The MAF sensor must be protected from the heat of the engine bay for more accurate readings. The filter must not be close enough to the ground such that water/hydrolocking are a concern. The MAF sensor must be placed relative to the filter and air straightener, similar to the OEM airbox, so that airflow readings are consistent and reliable. The intake tube must be no longer than necessary with minimum bend angle, to reduce restriction. The heatshield must provide sealing between the induction area and the hot engine bay to keep air intake temperatures low. The GrimmSpeed intake shown here achieves each of these requirements and more. What is accomplished is a true hybrid of traditional Cold Air Intakes and Short Ram Intakes, with all the advantages and none of the compromises.
This intake was designed with tuners in mind! The consistency of the airflow through the MAF sensor makes this intake very predictable and is as easy to tune as the stock airbox. While pro-tuning is always recommended, the Cobb SF OTS AccessPort Map provides a safe temporary alternative.
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