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Increased Initial bite and Wet Weather Response
The COBB Titanium Cat-Back Exhaust for your 2002-2007 Subaru WRX or STI offers premium styling and quality
We recommend using the HKS Turbo Timer Harness with HKS Turbo Timer for best performance
Injector size fuel trim
When the provided Radium injector seats are installed into these air-assist intake manifolds
Unitronic 2.5TFSI EVO Spark Plug Set mk7.5 Increased Initial bite and WetRecommended for 2. 5TFSI EVO (DAZA) applications. Gap to 0. 024" + 0. 002. Unitronic recommends a proper spark plug gap tool like the STM Tuned Gap Tool. 5 x NGK R7437 9 Spark Plug
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