All H&R ETS modules are plug-and-play, with no wire cutting and splicing or mechanical wrenching necessary. This means that no modifications to your factory wire harness are required and the module looks like a factory installation. H&R ETS modules come with all the parts required for installation. The ETS unit is easily removed whenever you want to return your car back to factory specification.. Easy plug and play install. No cutting, no splicing. 100% reversible. H&R 05-09 Audi A8/A8 L/A8 Quattro (2WD/AWD) ETS (w/Air Susp.). For vehicles with factory Electronic Air Suspension. Maintains factory ride quality and adjustability. H&R Springs Electronic Lowering System. Air Suspension Control Module. Electronic Lowering System. 100% made in Germany. Audi/Bentley ETS. ETS

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