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without the need for compressed gas or boost hoses and is fully adjustable from your tuning interface
FMSI D929 for fitment including Subaru WRX 2003-2005 and 2008-2010
Balanced out of the box
Special Note: Mounting bases cover factory spoiler/wing holes
elevating the overall aesthetics
NGK Ruthenium HX Spark Plug Box of 4 (FR6BHX-S) - 2002-2005 Subaru WRX Cobbtest without the need for compressedNGK Ruthenium HX High Ignitability spark plugs are the best in class plug for todays modern vehicles. Patented Ruthenium technology offers the most advance tip technology and delivers the highest performance and life expectancy. Created from advanced OE technology as a high ignitability plug; Ruthenium HX spark plugs come with patented, specialized OEM DFE and PSPE tip designs. NGK Ruthenium HX High Ignitability spark plugs provide a more complete
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