WIDE APPLICABILITY. 1️⃣Ultrasonic Cleaning ：Removes stubborn deposits using 40kHz ultrasonic waves. 2️⃣Idle Speed Test ：Evaluates injector performance at low RPM (simulated 750-800 RPM). 4️⃣High Speed Test ：Assesses injector function at maximum RPM (up to 5000 RPM).