A camshaft’s advertised maximum lift does not prove the valvetrain fits. This guide explains installed height, seat and open pressure, spring rate, coil-bind clearance and retainer-to-seal clearance, with a real BTR spring example.
Modern performance cars may require controller services, gateway cables and licensing before calibration begins. Learn how to identify the access path, budget the hardware and validate the vehicle safely.
SEMA says the U.S. specialty-equipment market reached $52.92 billion in 2025, younger buyers are driving growth and internal-combustion vehicles remain dominant. Here is what the data means for your next performance build.
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