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To withstand the high temperatures seen at the turbocharger
But once you go E85 and the basics on the KA24
providing a significant improvement in air flow and up to a 15+ WHP gain over stock intakes
Vehicle compatibility will depend on surrounding components around the oil filter area
NGK Iridium Spark Plugs Heat Range #7 Clearance To withstand the high temperaturesSUBARU OWNERS: NOTE IF YOU HAVE A 2. 5 LITRE BLOCK AND USING 2. 0 LITRE HEADS USE NGK BKR7IEX Heat Range: 7 (1 Step Colder than Stock) Why NGK Iridium? More Durability and a Higher Melting Point compared to Platinum, better center electrode anti oxidation and anti erosion, improved ignition, superior anti fouling, lower required voltage, new metal shell plating process for better anti corrosion. One Step Colder plugs are reccomended for cars with