Exhaust and suspension modifications, and EDC-retaining coilovers

Owners commonly modify exhaust and suspension—keeping the exhaust valve permanently open (unplugged without a code), fitting aftermarket sound controllers, and choosing Bilstein/KW coilovers that retain factory EDC adaptive damping via OE connectors so the swap is fully reversible—while bidders work to distinguish comp, Akrapovic, and Dinan exhausts by muffler and sound.