DEI 10682 RFI Shield Split Sleeve 1" x 3'RFI Shield reduces Radio Frequency Interference (RFI) and Electromagnetic Interference (EMI) from ignition systems & high voltage wires that can effect computer systems, electronic fuel injection, radios and other sensitive components. Electronic fuel injection systems thrive in an environment free from RFI. RFI Shield safeguards the delicate electronic components, optimizing fuel delivery and engine performance. Drive with confidence, knowing that