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Suggested for tuned applications
NGK single iridium plugs were designed specifically for the performance enthusiast
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Suitable for a Evo 8/9 with or without a intake and exhaust
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C7 Corvette Naturally Aspirated Tune Flex Fuel:No Suggested for tuned applicationsKagan Tuning Domestic Tuning package Includes 100% dialed in Calibration Files Custom Tune 93 E85 Flex Fuel Aftermarket fuel injectors and or fuel pump is a must whe running flex fuel. Suitable for GM with a cold air intake and full exhaust. Removes Speed Limiter Raises RPM Limit Adjusts Fueling Adjusts Ignition Timing Adjusts Intake Variable Cam Timing Adjust Boost Control Adjust Torque Management dialed in for 100% efficiency Adjust VE and